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The Ultimate Guide to Scuds
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- Опубліковано 15 сер 2024
- The Ultimate Guide to Scuds. You may have heard that people sculture scuds for live fish food. In this video, I give a quick overview of amphipods (scuds), surveying freshwater, land, and even deep ocean members of the group, review their contribution to science, and tell you how to start and maintain a successful scud culture.
Took a big jar down to my local river and scooped some water, soil, and plants to make a closed ecosystem. About a month into having it I noticed these tiny shrimp like creatures swimming around pretty fast and had absolutely no clue what they were and couldn’t find anything online that I typed in. Fast forward 7 months today when I randomly stumbled across your video. Thank you for solving my 7 month mystery! Been driving me crazy XD
They are widespread, to say the least. They might eat the plants in your ecosystem. Thanks for watching.
Looked up small freshwater crustaceans and found them.
Lol, life mysteries. Fun
been keeping them in a 55 gal for a year, I think I like them better than fish. shrimp are breeding in there too. they are great for cleaning algae off everything including plants and java moss. they don't bother the plants until they run out of other food.
Fantastic video man. Very great info. Everything I was looking for. I accidentally cultured these guys years ago and loved them! My betta loved them even more. My girlfriend at the time put some treatment stuff in the tank without my knowledge and it killed off they hundreds of them that we had established. I’ve been trying off and on ever since with my new tanks without success and now I know why thanks to you. I’ve been trying to start them in a spare tank with little to no lighting. Problem solved. Going to head down to the local pond tomorrow and collect some to start a new culture with.
Thank you! I’m glad you found the video helpful. Thank you for stopping by.
I just found some while fishing from snagged lake plants. I found a bunch of small green ones and two medium sized tanish orange ones.
Awesome video. I just ordered some scuds from Goliad Farms to start a colony!
I made an eco jar months ago from a lake in Florida, I have a single pond apple snail and a rams horn snail but I’ve and have been trying to figure out what the little critters are! Thank you so much.
Happy to help. Good luck with your micro habitat!
Thanks for this, Bob! Excellent teaching from you, as usual.
Thanks! Glad to hear you found it helpful!
Super informative, I didn't expect this to be as in depth and scientific as it was but I'm glad it is! Well done
Thank you! I’m happy you liked it.
I have scuds in my shrimp tank and I have over 600+ shrimps in a 20g tank that almost never gets water changes, all I really do is watch the TDS and when it starts to drop, I remineralize the water I put back in to about 250 TDS with the salt shrimp minerals for cherries. Given, I would prefer them not being in there.... They don't seem to be as big of a problem as people make it out to be. As long as you don't feed at night, they don't get as much access to the food in the tank people like to make it out to be.
I got some and they are destroying my plants 😭
What's TDS?
@@opalfishsparklequasar8663Total Dissolved Sol
Could you do a video on Kuhli Loaches? I love your style and depth on these videos. Straight to the facts, kept it simple but not afraid to use the proper terminology. Yes please..... lol
Thanks again. I’ll have to see… I have no experience with Kuhli loaches, so the learning curve would be high.
Thank you so much for this!! Found some little hitchhikers in the plant I just bought, and it looks like this is them! Thankfully, I still have them in their initial cup, and I think I'll try to start a culture. Very interesting and informative video :)
Wow, I imagine intelligence agencies briefings for American presidents aren't this well put together. The way you credited the professors and the white papers was so surprising and impressive. This should be up for a Peabody Award just for it's excellence in form alone.
Thank you! These videos are a labor of love. It’s really nice to hear from someone who likes one of my videos.
Great video. Everything I could possibly need to know about them, no waste of time.
Glad you liked it. Thanks for watching.
Hello, and thank you for this thoroughly researched video. It took me back to my days working with and identifying amphipods. I wanted to say that I don't think you have Hyalella azteca. Hyalella has a couple of small spines on its back on a couple of the segments near the swimming legs, and your amphipods don't have that. I think it's more likely that they're a species of Gammarus other than Gammarus fasciatus. Even if H. azteca and G. fasciatus are the most common scuds in the freshwater hobby that doesn't necessarily mean that they're the only ones. If you can get some good pictures of your scuds and upload them to iNaturalist someone might be able to give you a definite identification.
Keep enjoying your scuds! I'm about to set up my first tank in many years and I will probably seed it with scuds if I don't get some coming in on my plants.
Wow, thanks for that information. There of so many species of scuds-they’re harder to tell apart than sculpins.
@@sonnysfishroom3241 I used to identify amphipods for a living; otherwise I would have no clue!
I just found these guys in my aquarium. Thanks for the info!
Make more videos just like this! So informative and soothing.
Thanks so much for the feedback! Glad you liked the video. It just so happens I’m working on another one now.
this was very helpful. i noticed something large swimming rapidly through my daphnia barrel a couple days ago. i couldn't imagine what it was, and first thought of fairy shrimp, which i have never seen, and had no idea we have freshwater shrimp too. i collected my daphnia from a temporary pool this spring, i live right outside of dc in maryland, and got a whole mix of interesting animals, like cyclops, and what i think are seed shrimp. i must have collected some eggs or nymphs of ''scuds'' as well. anyway, it was quite a surprise to see this, and today i saw it again and was able to net it. i could see it was some kind of tiny shrimp about 1/8 inch long. i want to culture these as well as the daphnia, and i hope more appear in time. i have a lot of bright green filamentous algae in the tank i put the specimen in, i think it will eat that. i also feed yeast to the daphnia, maybe it can eat that too. so thanks for this vid, most info on google is quite vague about culturing these animals.
Thanks for the response and I’m glad you liked the video. If you run out of algae, your scuds will eat fish food and vegetables, like canned green beans. They are not fussy.
Great video production Bob, very well done.
Man you guys in the states are lucky with these!!!
I live in southern Thailand and have searched every store in the region... no one has heard or seen them... ive contacted commercial aquarium plant farms here also... one owner has seen the odd one or two... but says they disappear by themselves... the stores I've contacted in bangkok haven't seen or heard of them...
I'll be doing a tour of chatuchak fish market in a few weeks... one of the largest aquarium fish trade markets in the world!!!
If I can't find them there... I will start trying wild caught at different locations.... failing that I'm going to say they are so uncommon here in Thailand they are almost unheard of..
Pity!!! They would be an amazing live food to add to my fishroom.
Check for them on the plants growing at the water’s edge in your local ponds and streams. You may have a local species.
Your local ponds may have them. That's how I found mine. I'm from South Vietnam btw.
Did you find them?
I got some from the canal by mine . I really liked having them
Thanks for watching.
Best video on them I've seen! Thank you sir:)
Thanks very much!
This is really interesting and informative. Thanks so much for this!!!
You are most welcome. Thank you for watching!
Great video. Nice to see one of my favourites given some love:-)
Thank you.
Good guide to scuds, unique pet for aquarium, good luck always, greeting from indonesian ( lola )
Thanks for stopping by, Lola. Nice to hear from you.
Great instructional video.
Thank you!
Excellent research. Thank you.
Thanks!
Correction: Amphipods are not related to shrimp. They are in the same class on the taxonomic tree, but a class isn’t necessarily closely related.
Instead, they are much more related to the terrestrial bugs you find crawling around on your driveway called Armadillidiidae, often called roly-pollies, pill bugs, or potato bugs (although from what I understand, there are two completely different insects colloquially referred to as potato bugs).
Note that I say bug and insect, but Armadillidiidae aren’t bugs/insects - they just look like them on land.
I said “amphipods are crustaceans, like shrimp, crabs, and lobsters.” entnemdept.ufl.edu/creatures/misc/amphipods.htm Is that classification no longer accurate?
Thank you very much! Excellent video and very informative.
Thank you! I’m glad you liked it.
Great video Bob
Thanks for stopping by, Nick!
I gotta remark that the "land scud" name Talitrus Saltator is the most awesome and villainous sounding name ever!!
I can’t decide whether which I like more: the city scud or the deep sea giant scud.
@@sonnysfishroom3241 i looked it up. they flee fast backwards, but travel forward slowly....at least some species do. Others just seem to sit there and let danger eat them.
@@HalfInsaneOutdoorGuy There are A LOT of different species. Mine seems to move at a good clip forward. It they’re crustaceans, like shrimp and lobsters, so it would make sense that they can speed away backwards.
Cool video. Thanks for sharing
Thanks for watching. Glad you liked it.
@@sonnysfishroom3241 thanks for subscribing Sonny. I'll look out for your future videos
I got scuds by accident too and they totally infected my shrimp tanks and I had to start all over.
what’s interesting is that my scuds thrive in my canister filter, which is in darkness 24/7. they’ve sure got some adaptability
Interesting! Are they breeding outside the filter, and then colonizing it?
@@sonnysfishroom3241 i’m not completely sure. i see them occasionally in the aquarium, but when I open the canister filter, there is an overwhelming amount. Maybe your theory is right
@@catherinee.422 it’s hard to know. There are sooo many species and a lot of them haven’t been identified. We know there are some species that breed with long day lengths. I wouldn’t be surprised if there are some species where breeding isn’t light dependent at all.
a lesser known but highly common terrestrial amphipod is the lawn shrimp/lawn flea. These guys went full isopod with their terrestrial adaptations.
Thanks! I came across them in my research for this video, but couldn’t get any photos, unfortunately.
this is interesting, i just searched and found a nice article with a photo, they look just like scuds. not sure if they live in maryland, but i will look in damp mulch around my bushes for them. they may be good fish food too, if i can culture them.
@@bobs5596 Their carapace may be tougher than their aquatic counterparts, the same way that aquatic isopods are a lot softer than terrestrial ones, so keep that in mind when sizing the meal to the fish
Do they eat fungus biofilm?
I live slightly close to the endangered amphipod, it would be cool to see some!
Maybe a researcher will photograph one someday.
yeah, i live 30 minutes from rock creek, i should go look.
@@bobs5596 the wild stuff you can literally find in your backyard
Are they small enough for guppies to eat?
There are so many different species that I can’t say that some species somewhere isn’t small enough for guppies to eat. I’m would say, though, that the species I kept was probably a little too big for guppies.
Hi, very interesting. I have black scuds living in my garden, are black ones common, I'm in Brighton United Kingdom? Thanks John.
I’m sorry John-I’m in North America, so I don’t know very much about European amphipods. But thanks for watching. I hope you liked the video.
I have pretty small tank with a water filtration device. The scuds (gammarus pulex) fail to reproduce (they seem to try) and slowly die off. I wonder what’s the problem? Too much ammonia? I should maybe change the water more often? I thought they would be less sensitive.
It’s hard to know. Are you giving them upwards of 12 hours of light per day? If their origin was in the temperate zone, spawning is probably day length dependent.
is it possible this is a seasonal variety that leaves eggs to hatch the next spring?
Hi sir! Do you think i can found amphipods in Mangrove Areas?
I don’t know. But I found this link invasions.si.edu/nemesis/species_summary/94935
Are these the sames one's people feed aquarium turtles with?
In the feeding box says: "gammarus sp." and in other (older) one, "gammarus lacustris".
I'd like to start a farming business oriented to pet food.
Any tips (links) where to do research?
P.S. - I'm in Europe. Thank you!
There are many, many species, all over the world, so I can’t know which species you’ve seen. As far as research, I used Google and Google scholar.
@@sonnysfishroom3241 Thank you!
@@stratomix333 sure. I wish I could be more definitive, but there are A LOT of species. Try googling “amphipod species found in [YOUR COUNTRY]
@@sonnysfishroom3241 thanks for the help.
I'm finding much more information than I thought it would be possible.
Many different and interesting studies.
There are A LOT of species.
Do adult Medaka rice feed on scud?
I don’t know. I got my scuds by accident and never fed them to anything. My guess is they would. But I don’t know for sure.
@@sonnysfishroom3241 Mahalo’s for ur reply 🌴🤙 and May U and ur Ohana have a Safe & Happy Holidays!!! Aloha 🤙
I tried having Gammarus pulex in my aquarium once, but minutes after I put them into the tank, they started standing still, and all died later that day.
What could have caused this? I had crayfish and shrimp in there, and they were all in perfect condition.
I wanna try having scuds again, but I don't know what to do with my aquarium water to make sure they'll be okay, I can't find anything about it online.
It’s very difficult to say. Ordinarily, amphipods are pretty hardy. Maybe temperature/osmotic shock?
@@sonnysfishroom3241 Thank you. It actually happened when I took them from the water I caught them in and into a small container of kitchen tap water so that I could put them into the aquarium all at once without pouring in dirty water.
Maybe the water was too cold?
@@rasmusleddyr That’s possible.
@@sonnysfishroom3241 Thank you for the response. I will try again some time soon, but just more careful than I was back then.
Hello , I wanna ask that does scuds cause any harm to humans , if we drink water from that source where scuds reside ???
Plz answer me
I’m not an infectious disease expert, so I don’t know the answer to your question. I get my water from a municipal water supply. It’s filtered, purified, and treated before it comes out of the tap.
@@sonnysfishroom3241 okay sir
Thank you for replying me.
i would think if scuds were living in your water source, a lot of other things would be living there as well, like bacteria. you should boil the water before drinking it.
so how can I get an initial colony?
They aren’t sold in stores. A lot of people get them through other hobbyists. Sometimes they appear in aquarium club auctions. In the video, I mentioned that Goliad farms sells them online.
Crangonyx pseudogracilis (Northern River Shrimp) is more tolerant of low oxygen, high water temperatures and pollution than Gammarus spp. I find it a much better tank janitor
Thanks for the tip. I’ll look out for them.
@@sonnysfishroom3241 They are native to N. America, but naturalised in Europe.
Shoutout fromRVA
Thanks! Hope you liked the video.
Can i get some scuds from you? JRAS?😊
They are related to icopods
How to kill scuds in shrimp tank, sir?
I’m sorry, but I don’t know. I’ve never tried to kill scuds. My only idea is to set up a new tank and transfer the shrimp.
@@sonnysfishroom3241 thanks for your answer, sir.
Scuds are a cold water shrimp or crustacean s
Scuds LOVE duckweed.
There’s some floating at the top of their tank, but I guess I won’t have to worry about it getting out of control, huh?
These just showed up in my tank without me even trying. They are cute and seemingly good for the tank environment, but I would give them away for free because they are also annoying and never seem to stop breeding.
Yeah, mine showed up in some java moss I brought in from a club auction. I keep them in a single species tank-away from all my fish and shrimp.
@@sonnysfishroom3241 That’s a good idea. I didn’t quarantine my plants so they prob came from there and are in my main tank. The fish and shrimp seem to be doing okay though, but we’ll see. Do you think it would be okay to feed some to my betta in my other tank? Or I risk having them take over that tank too?
@@LeSurrealDream I don’t know for sure as I haven’t fed my scuds to any fish. I would guess some might escape and hide in the gravel. Most of my tanks don’t have substrate, so it’s not an issue. Mine were hiding from the fish in some java moss when I discovered them
@@sonnysfishroom3241 Fair enough. I think I will avoid it then just to be safe. Thanks for replying! Take care
i have pet scuds in my ecosphere
Canned green beans LMAO
They are not fussy.
OMG I HAVE SCUDSSS nooo
Yeah they're great until you get a variety that eats all your weeping moss.
Currently losing java and weeping moss to them. So hard to get rid of them.
Definitely keep them in a dedicated tank. Don’t add them to a planted tank where they can do damage. They are herbivores and will eliminate your plants if given the chance.
Cockroaches of the water.
Narrator needs work
I’m not a professional and would appreciate constructive suggestions.
Sounds good to me
Ah yes, another helpful judgement by an expert.
How so, can you be more specific?
Man I started seeing these all over my pront porch and 9nsude my guest house dried up. At first I thort they were fukn ticks dead from my dogs antiflea tick meds.
After long research.... it turns out they are lawn shrimps, land cousins of these
Yeah, I know about those, but didn’t include them in the video because I couldn’t get any photos of them. Really cool that you got to see them.
awesome video; i just want to give a shout-out to the ultimate SCUD, a freshwater species that comes from Russia, same as the SCUD missiles of yesteryear. Acanthogammarus victorii. Look'm up. Amazing critters.
Thanks. I’ll check them out.
Hmm how can I attract these little guys into a trap 🪤 I’m not sure the dnr would like me digging through the mud on the shoreline
I’ve only seen them in the wild once, at River Bend, on the Virginia side, above the Great Falls of the Potomac, at least 10 years ago. A friend with far sharper eyes than I have was pulling an aquarium dip net through the Vallisneria along the shore line. On close inspection, Imsaw that they were tiny little shrimp-like animals. I took some home and later identified them as amphipods. That batch didn’t survive, and the next time I came across them was on java moss I purchased at a fish club auction. If you don’t think you can collect them legally, than an option would be to order some online.