<P> Feeding sharks frozen non-marine fish can result in deficiencies of omega - 3 fatty acids, which can result in "fat infiltration of the liver," which can impede the organ's function seriously enough for major health issues . </P> <P> Sometimes sharks are unwittingly put in harm's way when aquarists include potentially dangerous tankmates in the same aquarium . Hobbyists generally don't think of other fish being a threat to sharks, but triggerfish, angel fish, puffers, and wrasses can all injure them . A large grouper is capable of consuming smaller sharks . Sometimes docile bottom feeding sharks are put at risk because of the fish that feed on the ocean bottom, sedentary sharks are simply an extension of the substrate ." Another problem aquarists keeping sharks with other types of fish have encountered is that the smaller, more passive aquarium - friendly shark species often have difficulty competing with their tankmates for the food provided by the aquarist . Sharks are predatory themselves and may maul or consume tankmates smaller or weaker than themselves . </P>

What type of sharks can you have as pets