Something mean for a 30g
- Thread starter Sye
- Start date
David
Neptune, god of the Sea
A 30 gallon is not too small for an oscar. It'll actually do quite well in there depending on the measurements. is it at lest 3 feet long? If so and oscar will be fine. 
Never2Bknown
Fish Crazy
Try the Polypterus retropinnis; a really cool looking eel-like fish that gets a max of eight inches. Either that, or many of the Knife fish are good, neat-looking predaceous species.
Another fish I read about (it may be harder to get, however) is the Black-Finned Colossoma. It gets eight inches and is described as being "a moderately dangerous fish." It needs live foods such as shrimp, baby fishes, and pieces of meat; it does not readily take dry food.
I think the nastiest possible fish that might fit in a 30 gallon would have to be the Dark-Banded Piranha. These guys get nine inches long (don't get the spotted piranha, it gets 14), and their vicious nature is legendary. WHen you handle it in a net, care should be taken not to let bite your hands. Special nets are also required, as it will destroy even the best of nets with its razor-sharp teeth. They must be maintained apart, as they will tear eachother to pieces. This is in contrast to their natural schooling habit in the wild. Many times when dealers who keep them take dead fish out from their other tanks, they simply throw them to the piranha where they dissappear in a short time.
Another fish I read about (it may be harder to get, however) is the Black-Finned Colossoma. It gets eight inches and is described as being "a moderately dangerous fish." It needs live foods such as shrimp, baby fishes, and pieces of meat; it does not readily take dry food.
I think the nastiest possible fish that might fit in a 30 gallon would have to be the Dark-Banded Piranha. These guys get nine inches long (don't get the spotted piranha, it gets 14), and their vicious nature is legendary. WHen you handle it in a net, care should be taken not to let bite your hands. Special nets are also required, as it will destroy even the best of nets with its razor-sharp teeth. They must be maintained apart, as they will tear eachother to pieces. This is in contrast to their natural schooling habit in the wild. Many times when dealers who keep them take dead fish out from their other tanks, they simply throw them to the piranha where they dissappear in a short time.
As far as knifefish go, most won't be able to live in a 30g tank for life. Clown knives get 2-3 feet long, and black ghost knives also get very large. You could try an African Brown Knife, which reaches around 8 inches and is an effective predator.Never2Bknown said:
Dwarfs
Fish Connoisseur
A breeding pair of jewel cichlids 
No other fish though 
No other fish though Most reactions
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