Mean zebra danio?

[Sillyfishies]

I have one zebra danio that chases one across the tank find a new one and does the same and keeps at it. I've never seen her not (it's a female).

 

[Talvari]

How big of a tank is it and how many zebra danios do you have?

 

[Sillyfishies]

5 in a 26 gallon tank!

 

[Sillyfishies]

Oh and they're the only ones in there

 

[Sillyfishies]

Also one of my fish has a little hair stuck to its head. It looks like it goes from her mouth into her gills.

 

[Sillyfishies]

Hah! Sorry newbie! Last question is this normal? The particles I mean

 

[Sillyfishies]

My water was tested today ammonia (dunno but she said it was ok) 0 nitrates 0 nitrites 7.2 PH

 

[Sillyfishies]

Dang! More weird behavior!?!? When the aquarium light is on theyre calm and sit at the top. The moment I turn it off they swim really fast all around my tank. Smacking all the walls and they're like bullets!

 

[Oceangirl]

A hair like thing from her mouth to her gill? Does it look like a parasite? Fish aren't supposed to have hair.
Aquarium FD - Anchor Worms - Disease Identification, Diagnosis & Treatment

 

[Sillyfishies]

It cant be that. He seems like a happy camper. And it couldve been one of my arm hairs got in and he ate it. I just checked again and dont see it. What are your thought of the crazy "lights off party)