Gourami aggression

[unknown_7]

My brother has a 55 gallon tank with two pearl gouramis, two dwarf gouramis, 1 giant danio and 1 phantom tetra. HOwever, its been like three weeks and one of the pearl gouramis are chasing the all the other gouramis especially the other pearl one non-stop and leaves the tetra and danio alone and one of the dwarfs is chasing the other dwarf. I want to know what sort of advice I can tell him to help calm down the aggression in the tank.

 

[greenmaji]

Get more cover; decorations, plants, rock formations....

 

[tetrin]

my pearl gouramis stay in the upper part of the tank. there's moderate aggresion between the two. however, the aggresion never gets out of hand and i see to it that the weaker one gets fed. the only option to diffuse aggresion is to add more gouramis of same sex. i couldn't find any in all three of my lfs's for about a year now.
the dwarfs are more intolerant of each other. in their case more cover would help, as would increasing the number of fish.

 

[dr_girlfriend]

thats too many gouramis in one tank. they are very territorial and can be very aggressive. IMO sticking to one species is better, and so is to have only 1 male. be sure to have alot of covering, dense planting so they cant see each other as much also.

 

[tetrin]

My brother has a 55 gallon tank with two pearl gouramis, two dwarf gouramis, 1 giant danio and 1 phantom tetra

big tank...almost no bioload...perfect for a gourami tank... ...