Great questions. I guess I'll take a stab at these because I have 2 myself, and they have been my pride and joy in my non-planted tank. I currently house them in my 55G, but their ultimate home is going to be either a 265G or 300G tank. I've had them almost 18 months now, and they were just under 3 inches when I got them. They are currently 12 inches and 13 inches, and still growing. And they have been reported to live 20+ years, but still not known for certain.
Squirt0170 said:
1. Do they get along with other fish? temperament?
Some may eat smaller fish, yes. Temperment, non aggressive. Would do good in most community tanks if the tank is large enough. 55G bare minimum to start, but will eventually need 125G or larger down the road.
Squirt0170 said:
2. How big do they get? What size tank would they need?
In the wild, they can get up to 40+ inches, but in the home aquaria, most say they only get up to about 20 inches or a little bigger. But also depends on living conditions, tank size, etc.
Squirt0170 said:
Mine eat frozen bloodworms and red wigglers that are cut up. They won't touch shrimp or frozen brine shrimp unless it's mixed in with the bloodworms. They will also eat frozen beef heart if mixed in with the bloodworms. But that's how mine are, very picky eaters, lol. Has to be with bloodworms.
Squirt0170 said:
4. Would they bite if you stuck your hand in the tank to fish the fish..
IME, no. In fact, mine eat right out of my hands, and even like being rubbed on the top of their head. I'll stick my finger in, and they will come up and sniff it, then sit there to get their rubbing.
Edit:
Here's pics of my babies....