My experiment

DBray6

AC Members
Dec 2, 2006
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16
Tampa Bay, FL USA
I have a 55 gal. tank stocked with several community fish. Everyone gets along just fine. Today my wife told me that I could have one of her male bettas for my tank. So I figured I would give it a try. I chose the least aggressive of the two because I didn't want to start any trouble in my tank. This betta doesn't flare at the sight of other fish or anything. The most aggressive thing I have ever seen him do is jump for his food.

Anyway I acclimated him to the big tank and then we let him out. We closely watched for about 5 minutes. Now, the black molly is the queen of the tank. She will chase others around sometimes and rush for food and stuff. She has never nipped but she knows she is boss. She came over to see the new arrival and bumped him. The betta turned and instantly flared. I thought, ok, get ready to break this up. But I watched to see if it was just posing. The molly swam away and then came back and passed very close. Again the betta flared and turned to watch what molly was going to do next. The molly also turned and the two of them swam in circles watching eachother and the betta flared the whole time. I watched this for about a minute to see if one would back down. Neither did. I didn't want to see them fight so I removed the betta and put him back in his desk tank. Molly is feeling darn good about herself right now.

Moral of the story is..... They say bettas get along in community tanks. Be careful if you try this because if provoked I believe they will fight with any kind of fish.
 
Molly knows how to fight like a betta...

Really it depends on the individual fish you are dealing with - some will kill everything they see, while I've witnessed my male fancy guppies nipping at one of my bettas (male).

Also, don't be surprised to see fish going missing as your tilapia and bullhead start to put on some wieght...
 
Last edited:
dorkfish said:
Just warning you know, if a fish can fit in another fishes mouth... it will.

Very true, especially with the bullhead. And also, if you don't already know this, the bullhead is going to get much to large for your tank. Normally I would reccommend adding to the schools to people who have small numbers as you do, but your's are not going to last long anyway.
 
The bullhead I know will have to be released soon. I got him in a net by accident and he was the perfect size. The tilapia I got in the same net at the same time. I always understood them to be vegetarians until I found this website last week. I am hoping they are going to remain as peaceful as they are.

I have learned alot from this site and learn something new all the time. Unfortunately I found the tilapia and bullhead before I found this site.
 
do not release the bullhead. either find a proper home for it via classified ads/word of mouth, donate it to an lfs or aquarium, or euthanise. any fish that has been in a tank with store-bought tankmates has aquarium-specific parasites and bacteria which can easily harm native wild fish if released.
 
awesome!
 
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