Do these sharks breath heavily naturally?I have had one in my 561 gallon tank for 5 months.He has been breathing alot heavier than my other fish since I first got him.I keep the temperature at 76 degrees.I have a water turnover of about 8 times with an oversized wet dry and protein skimmer.There is a zero reading for ammonia and nitrites.There is a nitrate reading of around 25.He is eating well and swims almost constantly.His tankmates include two small cortez rays,a naso tang, a yellow tang,a tessy eel,a lion fish and a Harelequin tusk.Allo f the other inhabitants appear very healthy.Anybody with any experience with these sharks with any obsevations?





