Zebra Danio Chasing My Other Fish

[carly27]

I recently posted about my angel fish/danios being sick and learnt that I haven't gone through the nitrogen cycle so that was probably why. My ammonia still hasn't gone up so my pH is at 6.6 and everything else is at 0ppm. So I have just been waiting for the cycle to get going. The other day I noticed one of my danios was bloated but I was told here that it is probably just a female and that they are bigger. Well today I fed my fish and watched them eat and I realized the bigger danio wasn't letting any of my other fish eat/was chasing them away. Also it is a LOT bigger then it was yesterday. I've seen it chase the other zebra danio before but I assumed it was just playing with it. But now I am thinking it is really sick. There are no scales sticking out either! I posted a link to a video I hope it works.. help?!


http/s7.photobucket.com/albums/y255/carlythemuffin/?action=view&current=IMG_0156.mp4

 

[Em29]

I am no expert but is it possible she is carrying eggs?? She looks too healthy to be sick....

 

[hensonc4098]

Looks like it's just being over-dominant to the other fish and getting all the food.
What is your stocking and size of tank?

 

[carly27]

i have 5 neon tetras and an angel fish. and one other danio. the other one just recently died I was hoping it was just being a fatty and not sick because it looks huge! The other danio is a male i believe. It is more slender and the colour is a bit different in colour. And the size of the tank is 30 Gallons.

 

[hensonc4098]

You would be better in that case to up the number of danios to at least 6 since they are naturally schooling fish. This will help to disperse any aggression or dominance between them all and will give others a chance to feed. My danios chase at each other, but since there is more of them, they can take turns to chase/be chased and turns to eat

 

[carly27]

Well ya I know that, but my tank isn't cycled so I would take the risk of just killing more fish

 

[hensonc4098]

In that case you just gotta sit it out and hope it doesn't starve the others.