Weird Bala Shark Behavior

AZLenoreOctober 16, 2011

I recently set up a 150 gallon freshwater aquarium. The first fish I got were 3 Bala Sharks each about 3 to 4 inches long. This was about 4 weeks ago. They did great but when they fed they would go up to the surface of the water and suck in the food, along with quite a bit of air. You could see the air bubbles go out their gills. I have had Balas before and don't remember them doing this.

About two weeks ago I added about 25 Tetras and everyone is getting along very well. The water quality is stable, no signs of disease or injuries, everything is great. Except...

Three nights ago, right after I fed them, I saw one of the Balas upside down on the bottom of the tank. His respiration seemed labored and I was ready to pronounce him a goner.

I got up the next morning expecting the worse and was very surprised to find all the Balas in apparent good health. Three days later and everyone is alive and kicking.

As the fish was in obvious distress I would like to take steps to avoid the situation in the future, but first I have to figure out what caused it.

Could the sucking in of air be in some way related?

I appreciate any thoughts you might want to throw my way!

Thank you for reporting this comment. Undo
randg(11)

Perhaps your water is not oxygenated enough? How did you acclimate your new fish to the tank? Before you introduced the Bala Shark to the tank, was the tank aged--the tank accumulated enough good bacteria to be cycled?

    Bookmark   October 31, 2011 at 3:07PM
Sign Up to comment
More Discussions
Plants for new freshwater aquarium
I want to set up an aquarium in my new home. I think...
RocksAndRoses
Beta fish becoming anti social
Hey experts I'm new in desperate need for advice for...
hurleygurlie932
Platy Questions
Hi, I've recently started a 29 gallon tank and currently...
Haider_Sakhi
55 Gal Salt Water Aquarium for Sale
The 55 gal acrylic aquarium includes: (4) fans, (1)...
Chavezoe
Aquatic Plant ID
Hi, I have an aquarium, and awhile ago we put live...
Jessie Tyler
© 2015 Houzz Inc. Houzz® The new way to design your home™