Zebra Danios Chasing Tetras And Each Other

[crmpicco]

I have 3 Zebra Danios and 3 Neon Tetras in my 70ltr tank. Over the past fortnight I've noticed the danios chase each other a lot and also chasing the tetras on occasion. One of the danios looked like it was hiding away, since it had been chased a lot earlier in the day.

Are danios aggressive in that way? I was under the impression they were very peaceful, community fish. Or can this behaviour be discarded as playing?

 

[gilaesther]

Pretty sure both of those fish need schools of at least 6, and preferably more.

 

[Tuxyu3]

Danio's and Tetra's both need larger shoals and even then the Danio's will chase.

 

[thereverendturtle]

The danios are chasing, because that's what they do. They do however as previously stated need to be in larger groups of 6+, as do your neons. Schooling fish will sometimes get aggressive when kept in insufficient numbers and chase everything else in the tank out of fear. It's kind of a "well I'll show them I'm not scared" act. Up your numbers and they should stick to playing tag mainly with their own kind.
Good luck

 

[N0body Of The Goat]

Danios are reknowned for being fiesty if kept in small groups, you should aim to have at least 6 but ideally 10+, not surprising at all you have problems with just 3.