Which fish is nipping?

[s6king]

I have a fin nipping fish I suspect it is a blue tetra but I also just got 6 mollies and two mickey mouse platys 2 nights ago. I just wanted to know if anyone has any of this nipping other fish's fins? My king cobra male guppy got his fin nipped last night. any one have a clue who the fin nipper might be?

 

[fraservet]

mollies don't tend to be fin nippers - although there's always the occasional rogue
some male platies can be aggressive, especially if they have a lot of swordtail in them

 

[The-Wolf]

I susspect you are right about the blue tetra.
how many tetra(s) are in the tank?
If the answer is less than 6 then that is the reason
s/he is nipping the fins of the other fish.

 

[s6king]

2 Blue Tetras, 2 mickey mouse platys, 6 mollies, 14 adult guppies, and about 17 guppy fry are in this tank. who can tetras be with? frogs? nothing goes in with my endlers except snails and plants my others tanks are cycling so I cn but them in a 3 gal or a 1 gal with frogs (i can't put frogs together as my daughters refuse to share (the frogs are theirs they bought them they only will share with my fish) or should I seperate with a net breeder until the other tanks have cycled? other tanks: 57 guppy fry, 2 african dwarf frogs, 2 bettas several live plants. AND KEPT SEPERATE FROM ALL OTHERS:14 ENDLERS
tanks: 2 10 gal, 2 5 gal, one 3 gal, one 2.5 gal, one 1 gal, one 1/2 gal, 2 betta tanks and 5 betta vases. Coming soone 3 more 10 gallons, and 10 fancy guppies, 2 swordtails, 2 veiltail bettas and I am thinking about oscars.

 

[nino]

i dont know much about blue tetras, but one of my male platies was really aggressive and nipping the female platies. so... they could also be the culprit. just watch the fish, see if somebody is chasing the others around.

 

[CathyG]

If your tank has the capacity, buy yourself at least four more blue tetra, they are a schooling fish and if their numbers are down they may be more tempted to chase their tank mates than each other...