blue acara won't eat - what else might tempt him?
My boyfriend has a small collection of NW cichlids in a 50gal tank. Recently, the nitrate levels in the tap water spiked (nearly 40ppm), though I think it was several weeks before he caught it. Consequently, the nitrate levels in his tank were 40+. Everybody seems fine, except the blue acara who wasn't eating or swimming much. Moved him over to my tank, where the nitrate levels were staying below 10 (0 ammonia & nitrite, water temp 77-79), hoping he would improve but so far most of what little food he does inhale is quickly spit out.
So far I've offered frozen bloodworms, frozen brine shrimp, Omega sinking pellets, Tetra Crisps, and Hakari Carnivore pellets. I know spitting out food is a pretty bad sign and he likely won't recover, but can anyone recommend another food that might tempt him?