Happy fish in Aqueon 2.5 aquarium.

This is my Aqueon 2.5 gallon aquarium with an endler live bearer guppy and swordtail dalmatian molly. I got the tank and guppy free off Facebook marketplace last summer. The guppy is "Spike" and the molly is "Kirby" (He suctions up the food).
Spike is at least 3 years old. Kirby came from Petco last summer. They seem to get along fine.
The tank is very easy to keep up. I do a half water change every 1-2 weeks (usually weekly), wipe down the inside of the tank walls, and rinse the filter out. I've only changed the filter once so far, but it works fine. I do the water change using a siphon and bucket to be sure to get the debris off of the bottom. Using the over the side feature of the filter would not remove much, if any, bottom waste.