My youngest clown loach who is in my 20 gallon grow out tank became very suddenly bloated. I read about eye issues look at pic please tell me if they look ok. The tank mates are 1 juvenile arowana (lost sac 2 weeks ago), 2 honey gourami 1/2", 1 sword tail Molly adult, 1 juvenile skunk botia, 1 juvenile Yoyo loach ( both under 1") got yesterday, 2 panda Cory, 1 neon, 1 male beta, and 2 1" bleeding heart tetra. The juveniles are just waiting to be big enough for my 150g. Temp is 80 ammonia is very low almost 0, nitrates are 15, very soft water 1 drop and it turns. Small an med round pebbles, tend to keep light off most the day maybe 3 hr max of hood light. Feed sm crickets, shrimp pellets, algae wafers, trop flakes, froz/FD Bloodworms, and beefhheart flake. Very small amounts 2-3x daily. 2 30g filters on low no carbon great bio filtration air stone on low-med plenty of hiding space , no real plants, will show pic. Please tell me what I should do for him? Peas?is he constipated, or did he eat too much. I had just put in an algae wafer and a cube of frozen blood worms. I'm now noticing everyone looks bloated.?????