Bichir Need Help Desperately

[ir.gar]

hi all
desperately needed help. i have a bichir jump out of my tank twice but even before these accidents, when he swam to the surface to get air then he is just stop and fall to the bottom of the tank uncontrollablely and usually on it back before turn over on its belly again. but he haven't eaten any thing for a month already . he has a bichir tank mate which eaten normal water ph and nitrate tested they are normal please help or direct me where to go really appreciate
ir.gar

 

[WILDER]

Size of tank in gallons or lites.
How many fish and which type.
Water stats in ammonia, nitrate, and ph.
What's the make of the test kit you are using.

The symtoms are pointing towards a number of things.
Bad water quality, parasites, bacterial, toxins, ph shock.

He dosn't sound like he's going to make it i'm afraid. Then saying that fish can surprise you.