So I got a Jaguar cichlid 3-4 inches almost 2 months ago I also have 8 goldfish/feeders in their as well I assumed they'd get eaten. But the Jaguar is a very picky eater he was only eaten bloodworms no pellets even though he was eating them at the store. I also got a couple plants from the same store that are in the tank attached to driftwood. Its a 75 gallon tank 79 degrees with an ac110 and an xp3 for filters I do 60% water changes once a week and have had the tank up for 4 months my water tests 0 ammonia 0 nitrite and 10 ppm nitrate sometimes 20 ppm nitrates. So now the jaguar is barely eating and is laying on the bottom of the tank and just swims around occasionally or to chase a goldfish off or he is hiding in a corner. His colors look fine there is no heavy breathing or laying on his side. Also in the time that I've had the fish together the goldfish have grown while the jaguar barely has. If anyone has got some experience and advise I am all ears.