Originally Posted by RickR
Alright thanks Dano and Dave, I am very interested in the sharks thats why i ask. Eventually what shark would you recommend best for a beginner and tank with the fish i have.
This is where you will need to do your research via the web, and books on aquariums and books on the specie you want (you can check them out at the library); you can ask your local fish store for any and all information as well (by local fish store I am NOT refering to petco, petsmart or any of their ilk, but rather a store that has knowledge about the fish they sell, such as a smaller non-chain pet of fish store).
I know that some sharks usually are territorial like the rainbow shark and red tailed shark and usually only one of these type sharks is in the tank at a time (be it a community tank or otherwise), also these two type of shark don't always play well in a community tank as they may bully other fish.
So do your research, go to a good fish store that knows there stuff and see how their tanks are set up to give you an idea before you add a shark; also ask a ton of questions. You can also send e-mail quieries to breeders, breeding facilities or other people you know have these fish.
My albino rainbow shark trades off with the Boseman's rainbow fish in one of the tanks for 'bully of the day' as one or the other will try to keep the other tank mates either all in one area or away from an area (however I have noticed no injuries on any of the fish in that tank and keep a constant watch for any bruising (discoloration) and nipped fins.
If you get a shark for a community tank I would say that "smaller is better" as you will have less chance of the shark harrassing the other fish , and the fish will get bigger fast. Case in point my rainbow shark was about two inches long when I purchased it and is now doubled in size.