02-02-2010, 11:52 AM
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Originally Posted by iamntbatman
Unfortunately you're going to have all kinds of problems with that tank. As was stated ghost knives need a really large tank (75g minimum) as they grow quite long. Your barb needs some of his own kind to school with as schooling fish do really poorly when they're not in big enough groups. Your rainbow and redtailed sharks are going to fight with one another so I recommend only keeping one of those. The scat is a brackish water fish that shouldn't be kept in freshwater. I would return it as soon as possible.
What other fish do you have? Guppies will be eaten by the BGK. Do you still have any gouramis or cichlids? If so, what kinds?
Ghost knives do best housed with fish too large to be eaten that aren't very aggressive, which somewhat limits your list of appropriate tankmates for them.
In fact, you can convert a scat to saltwater easily.