My sister left her fish behind

[FaithAnn]

My sister has a freshwater with a shrimp, a bunch of snails, and a school of neon tertras. I don't know the first thing about how to take care of them, she has a filter and the snails eat anything else as well as the shrimp. She had to go to college so we have been feeding them and topping off the tank with some conditioned water whenever it gets too low for the filter but other than that we are clueless. Some of these fish look ill to me? But I wouldn't really know and maybe I'm just being dramatic. I'm not sure if her tank is messy, since she set it up with live plants and algae and I'm just way out of my depth here. I don't want her to lose all of her fish cause she went to college.

 

[TMaier]

Ya those neons look a bit lumpy. But honestly if you look at them sideways they pop up with something.


What size is the tank?
How many occupants and what kind?
How heavily is it planted?

Most tanks new a partial water change weekly, like 50% using a water conditioner to detox the chlorine and other bad stuff found in most tap water.

If the tank planted, vacuuming is out of the question most of the time. Clean the filter weekly by rinsing in old tank water. Only feed the fish every other day and do not over feed.

 

[King Fisher]

Your sister can't call you and walk you through her maintenance routine on the tank?

Start by doing 50% water changes every week. If you can get a siphon/gravel vacuum or have one, try to use it to gather as much gunk from the bottom as possible during your water change. Feed only what the fish can eat within two minutes. For those fish you are talking about a small pinch of food. Feed once a day.