Need some advice...

regenesis000

AC Members
Dec 7, 2006
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Hello all,
i am new to the forums and relatively new with fish keeping and i am afraid i have gotten myself into a dilemma.
I recently bought a 30 gallon tank and stocked it with fish, what i believed to be a reasonable amount...
Unfortunately, the first two fish i bought were both rainbow sharks, primarily because they look great and are hardy. i bought them when they were young 2-2.5" and the girl at the store said they would get to be 3-3.5" at the absolute max and were fine with all types of fish, including each other. i learned that this is of couse not true and that they grow to be 6" relatively quickly. Well as you can guess for the first few weeks after i added all my fish things were fine. lately however, one of the sharks has become very agressive and is attacking all the other fish, especially the other shark (who isn't aggresive at all). I did some research and learned that when my sharks grow they will kill anything smaller than them and also that i should not have two in one tank. i set up my ten gallon tank and am currently waiting for it to settle and be ready to accept fish. I am planning to move the aggressive shark into this tank with hopes that the remaining one won't become aggressive if he is the only one in the tank (my buddy has one that is 5" and it is fine). I was wondering if i am pursuing the right course of action with regards to my situation and also if a ten gallon tank is large enough to hold the agressive shark when he grows to full size (the people at thestores say that the ratio is 1" of fish per US gallon, so is 6" of one fish in a ten gallon tank okay???).
At least i learned one thing from this experiance, i will never by a fish without researching it beforehand again!
Any help you guys could offer me would be most appreciated.
 
I'd bring them both back to your LFS. Definitely the one in the 10gal. Those sharks are going to get too big for your tanks. There are plenty of smaller beautiful and hardy fish that would look great in a 30. What else do you have in there now?
 
the inch per gallon rule is a myth. the only fish that the rule applies to are neon tetras - small and skinny. for all other fish, you have to take into account adult size, feeding habits, aggression, water requirements, temperature, bottom/middle/top level, decor needs, etc. . .

as far as keeping the shark in the 10g. . . could you? yes, you could, with good water maintenance, careful feeding, and no tankmates. should you? probably not. large fish need room to swim in order to thrive. one 6" fish is going to produce much more waste than 6 1-inch fish. in a small tank, water quality can quickly go from good to bad to worse in as little as a day.
 
wataugachicken said:
the inch per gallon rule is a myth. the only fish that the rule applies to are neon tetras - small and skinny. for all other fish, you have to take into account adult size, feeding habits, aggression, water requirements, temperature, bottom/middle/top level, decor needs, etc. . .

as far as keeping the shark in the 10g. . . could you? yes, you could, with good water maintenance, careful feeding, and no tankmates. should you? probably not. large fish need room to swim in order to thrive. one 6" fish is going to produce much more waste than 6 1-inch fish. in a small tank, water quality can quickly go from good to bad to worse in as little as a day.
its not only a myth, but it doesnt apply to neons either. it does not consider the behaviors of the fish at all. can you keep a neon in a 1 gallon? yes, but neons are schooling fish and hense need more of their own kind... which a 1 gallon cannot fit.
 
jm1212 said:
its not only a myth, but it doesnt apply to neons either. it does not consider the behaviors of the fish at all. can you keep a neon in a 1 gallon? yes, but neons are schooling fish and hense need more of their own kind... which a 1 gallon cannot fit.


What he said.
 
oh yeah. add "schooling needs" to my list above.
 
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