My crowntail betta is in a 2.5 gallon tank..
He had a couple ghost shrimp and a snail with him, doing 50% water changes every other day or so (or 100% water changes, depending on how the water looked) and no heater (Had to use it for my community tank.. a couple of my fish got ich and I'm still trying to get rid of it with the heater, 50% water changes every day, etc)
The tank has been like that for a week or so.. everyone was fine.
Then today I noticed one of the shrimp was dead..
and another was almost dead (on his back, hardly moving)
and one was fine.
and the snail? Dead.
The last shrimp died within the last couple hours..
I swear, everyone was fine yesterday..
I changed the tank water (100%) the day before yesterday and it's still clear as can be..
My betta looks fine, still relaxed, fins out and swimming around..
but all his tankmates are dead!
I know this isn't 100% about the betta..
but whatever got his tankmates could kill him..
Should I wash the tank? remove him?
I'm not sure what to do..