bloat clown loaches

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...