How to Reduce Aggression in Tank

Astronomiii

New Member
Joined
Jun 8, 2021
Messages
47
Reaction score
30
Location
Bothell
Hi,


I currently have a 20 gallon tank, where I have a rainbow shark, 2 sunset Honey Gouramis, 3 Pepper Corys, and 2 Swordtails. What happened when I first got the rainbow Shark when he was still a baby, and he had no signs of aggression, however as time goes on, I start to see more and more aggressive behavior from him, so I was just wondering how to reduce his aggression if theres a way


Thanks, any help is useful
 

Circus

Fish Herder
Pet of the Month!
Fish of the Month!
Joined
Jul 14, 2020
Messages
1,386
Reaction score
1,233
Location
Washington State, USA
Most rainbow sharks will chase any fish the enters their territory, they generally become territorial once they reach adulthood. For rainbow sharks you want them to be the only bottom dwelling species, and don't keep anything they can catch or bully. The smaller the space the more agressive the fish will be. They require a tank of something like 40+ inches in length to have a full territory.
 
OP
Astronomiii

Astronomiii

New Member
Joined
Jun 8, 2021
Messages
47
Reaction score
30
Location
Bothell
Most rainbow sharks will chase any fish the enters their territory, they generally become territorial once they reach adulthood. For rainbow sharks you want them to be the only bottom dwelling species, and don't keep anything they can catch or bully. The smaller the space the more agressive the fish will be. They require a tank of something like 40+ inches in length to have a full territory.
thats the thing I found weird, he attacks the top dwellers like the sword tail, but does not attack or even care about the corys the bottom dwell with him
 

Byron

Fish Guru
Joined
Feb 25, 2009
Messages
15,921
Reaction score
7,414
Location
CA
I agree. The Rainbow "Shark" will readily out-grow this space (already is). And it can become quite aggressive, and it is a fact that small spaces will make this aggression even more likely and severe.
 

Sgooosh

Fish Aficionado
Joined
Dec 3, 2020
Messages
4,060
Reaction score
1,425
Location
United States
Hi,


I currently have a 20 gallon tank, where I have a rainbow shark, 2 sunset Honey Gouramis, 3 Pepper Corys, and 2 Swordtails. What happened when I first got the rainbow Shark when he was still a baby, and he had no signs of aggression, however as time goes on, I start to see more and more aggressive behavior from him, so I was just wondering how to reduce his aggression if theres a way


Thanks, any help is useful
sharks are all aggressive i think when they grow up
 

Avel1896

Fish Herder
Joined
Jan 5, 2021
Messages
1,803
Reaction score
790
Location
Nice
rainbow shark
Epalzeorhynchos frenatus has nothing to do in a so small tank. Grows big and turns aggressive when aging. It needs 400 liters minimum for 1 specimen. The only way to solve your problem is to pull it apart asap.
 

Most reactions

Top