But if you have less than six sharks, they'll begin to quarrel, and the weakest ones will be miserable. So if you keep Rainbow Sharks, keep one or keep many, but don't keep just a few together in the same aquarium. 

Rainbow Sharks are beautiful, energetic, hardy, and rather aggressive to other Sharks, but not quite as aggressive as Red Tail Sharks. Most sharks are not aggressive to other types of fish. So sharks make good tank mates for many types of fish. But as mentioned above it's best to have just one Rainbow Shark or one Red Tail Shark in an aquarium, or more than six, but not just a few. 

Appropriate Home
An aquarium with an exterior power filter with a BIO-Wheel, a maximum of 1/4 inch of gravel, and an aquarium heater adjusted to between 76 and 80 degrees F. Eventually a Rainbow Shark will need a large aquarium with at least 50 gallons of water. Click here for more about warm water aquariums.

All Sharks are jumpers, so the aquarium they live in must have a cover with no holes. Click here for more information about aquarium covers.

Rainbow Sharks need a piece of pipe or a cave. The pieces of pipe, shown in the pictures on this page, were cut from a long pieces of pipe that we bought at Home Depot. Before we put the pieces of pipe in our aquariums, we cleaned them in warm water. Next we tested them in a small aquarium with a few fish to be sure they weren't toxic.

Finally we put the pieces of pipe in our large aquariums with lots of fish. You might prefer to buy an ornamental cave or rocks that is labeled for use in aquariums. Click here for more about how to avoid contaminating your aquarium.

Recommended Diet
Floating flake food. Perhaps some sinking food pellets but be careful because uneaten food will soon spoil and pollute the water. Be sure to always use a small net to remove uneaten food after about 10 minutes. Click here for more about feeding fish. I feed these fish a few Black Worms every other day. Click here for more about Black Worms.

Compatibility
Only one Red Tail Shark or one Rainbow Shark or one Pink Rainbow Shark to an aquarium, or many, but not just a few. Otherwise, the strongest shark will make the others miserable. All Gouramis, all Barbs including Tinfoil Barbs, all Danios, all Rainbows, a school of Bala Sharks, and  a school of Clown Loaches. Click here to read more about several groups of compatible fish.

Size and Life Span
Rainbow Sharks live for several years and grow slowly to a length of 9" and rarely even longer.