KILLERKOI said:
Hey ARAPAIMAG is the RTCs as aggressive as they are saying or is it more their size over everything else that makes it seem that they are?????? BTW what is a Black shark?????
Before I answer your question I want to
apologize for my earlier reponse on this forum.> My answer was a mistake. I erred by thinking South American red tail and my sizes of my fish were based on my south american Phractocephalus hemioliopterus cats.
I have kept the asian redtail Hemibagrus nemurus formally mystus nemurus for 16 years. My largest and most aggressive of the 3 I have owned I grew to 18inches in a 240g. He was totally insane. He killed for fun. He almost died the first night I got him (from cichlid man Milo in Chigago). He killed a pair of Blue channel cats both over 24". He stripped their skin off as well just to further torture them. They bled a lot. The water was fouling when I found them the next morning.
When I put him in the tank the night before I was worried the channel cats were going to eat him, they are so thin for their length. So I put a tube if for him to hide in if he was threatened.
The tube did serve as a den for him and the only time any of the fish did not feel terrified was when he actually was in it resting.
I have had two others and neither of them were/are anywhere as viscious as the first one.
The killer black shark Morulius chrysophekadion is the $2.99 type sold in the pet shop at about 2". When small they are a fine community tank fish, however..
They grow big and when they do they will attack many much larger fish that can not turn around on them. They don't kill over night it can be just the constant badgering and deep wounds inflicted over a long period that eventually kill their victim.
I lost 2 large south american red tails Phractocephalus hemioliopterus and my baby arapaima gigas (Nemisis). She was harrassed from the time she was 2 feet till her death at less than 4 years old. She was 5 foot 5 inches and weighed 126 lbs. She was weighed on a local vets scale and her head and tail were touching the ground.