My Koi betta hangs out with the cories - Betta Fish and Betta Fish Care
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post #1 of 4 (permalink) Old Yesterday, 08:42 PM Thread Starter
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My Koi betta hangs out with the cories


I just ran into this message board.
I have 2 bettas, one blue vt and one koi.
The blue vt is more territorial and aggressive, he killed one of my snails and he wouldn't stop flaring at the next one.
He is alot happier alone.

Overall, i think the VT bettas are more territorial.

Then I have the koi betta, he is super social, lives with a snail in a 3 g and loves attention from us.

Recently, I just got a 20g long tank, i decided to put 2 corys with him.
He loves hanging out and socializing with them.
After, i added a 3rd and a 4th one, all different sizes.
Not once has he flared at any of them even though they are bumming and swimming around him.
It's quite a sight! =)
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post #2 of 4 (permalink) Old Today, 09:13 AM
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Join Date: Jun 2014
Location: Ohio
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Hello and welcome to the forums.

All bettas are territorial and aggression is an individual thing. Some bettas are just relaxed and will tolerate minor intrusions into their territory, others will see anything that moves as a threat. All we can do is put up with their little quirks and enjoy them.

Feel free to post around the forums.
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post #3 of 4 (permalink) Old Today, 11:34 AM
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As Veloran has said Aggression in betta is individual when it comes to a type or species. I have a VT that I have housed with one lone male guppy. The Guppy was in the tank to start and help the cycle in a new tank. I rescued the VT from Walmart and introduced him to his new home under cover of darkness. After being together now for a few months, this pair is inseparable. They eat together and sleep next to each other every night. They have their spats, and the guppy is missing some tail fin but he stays right with my VT. If anything would happen that either one was removed from the tank the other would get very upset and quit eating. So you have the same with your cory.

This being said I would not put tank mates with any of my other 4 betta. Only because they have never had anything else in the tank. So I don't push it.
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post #4 of 4 (permalink) Old Today, 12:47 PM
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Join Date: Jan 2019
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Yeah, my betta is in a community tank and loves his Cory haha. You know they get a long well when they are always sharing each others food and there's no flaring or aggression haha. Sometimes the betta will practically lay on top of the cory.

My veiltail is also more on the aggressive side. I put 2 rasboras in there with him for a minute and while he never nipped at them, he would flare at them several times a day and do some light chasing. I took them out. haha.
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