Need help deciding.

PiranhaFan

Feeder Fish
MFK Member
Apr 27, 2017
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Hello, friends. I am trying to decide between a solo serrasalmus rhombeus or a small group or pygocentrus nattier. Please recommend the better option to me so I can decide on which species. I have a 100 gallon tank with double filtration, and low light levels. Thank you.
 

Boomer1224

Candiru
MFK Member
Jun 24, 2017
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depends on what you are looking for with a rhom you will get little to no movement while young with red bellys depending on how many you get they swim in schoals,also rhoms grow larger (but take a very long time)while red bellys grow between 10 to 12 "hope this helps
 

Gourami Swami

MFK Moderators
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Jul 13, 2006
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Red bellies will be a more interesting tank to watch, as they will actually move around and interact with each other. The rhom, as stated, will probably just sit there.
 

Boomer1224

Candiru
MFK Member
Jun 24, 2017
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my little serra was attacking danios as soon as I took him out of the fed ex box
 
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