hey guys just found this thread ive got a jack ! hes now 45 cm we got him 1 & 1/2 years ago he was 5cm cost me 70 bux and ive kept fish for nearly 30 years and he has a personality like a dog (chases balls past the tank etc) he eats live hearing, squid or whiting (approx a kilo a week ) totaly physco ! i through a eyebiter cichlid(15cm) in after he was torturing my jar and he tore it a new 1 in seconds ! prob a fair bet for the most agro fish thread !
hes become part of the fam ! nice photos and nice fish btw guys ill post some of our lil buga in the morning ! cheers chris.
p.s. - i only put 3 cups of salt to every 3rd water change (in a 1000 l tank) and they grow to 3 foot in the wild and 2 foot+ in captivity