Can Only One Chromis In A tank Work?

[reeftankdude]

I have a Chromis fish in my 20 gallon tank. I saw a YouTube video saying that Chromis fish have to be in uneven groups, and that one alone will die. Your thoughts. thanks all

 

[Cell]

One is preferable.

 

[|Frank|]

I had one and he did just fine.

 

[Tamberav]

I have a Chromis fish in my 20 gallon tank. I saw a YouTube video saying that Chromis fish have to be in uneven groups, and that one alone will die. Your thoughts. thanks all

Nah… they school in the wild but in our artificial reefs it’s not uncommon for them to pick on each other leading to some of them dying.

he will be really happy to not have to deal with that drama.

 

[131696]

Ask the fish..lol

 

[Fishfreak2009]

They school in the wild, but often fight in captivity, especially if not fed frequently. 1 will do just fine by itself.

 

[moz71]

Had two separate tanks over the years where only one worked in each tank. Definitely preferred one!

 

[Twoddler]

First fish I bought nearly 2 years ago, 9 of them, still got 9 fed once a day, 220g lots of rock

 

[Fishfreak2009]

First fish I bought nearly 2 years ago, 9 of them, still got 9 fed once a day, 220g lots of rock

I have a group of 5 green and 3 orange lines in my 75 gallon, haven't lost a single one or had any fighting. I feed mine 4-5x daily though.

 

[Tamberav]

First fish I bought nearly 2 years ago, 9 of them, still got 9 fed once a day, 220g lots of rock

Ya they do work great in the right tank

 

[Tamberav]

The OP has a 20g so one is best Imo

 

[RobB'z Reef]

I have a Chromis fish in my 20 gallon tank. I saw a YouTube video saying that Chromis fish have to be in uneven groups, and that one alone will die. Your thoughts. thanks all

That's garbage information. One will do just fine provided you care for him like any other fish.

 

[fishmonkey]

I have a Chromis fish in my 20 gallon tank. I saw a YouTube video saying that Chromis fish have to be in uneven groups, and that one alone will die. Your thoughts. thanks all

I’ve had my one blue green chromis for almost a year now. He’s friends with my springer damsel

 

[workhz]

First fish I bought nearly 2 years ago, 9 of them, still got 9 fed once a day, 220g lots of rock

Are they the same 9 though? That’s the real trick.

 

[Brian_68]

Are they the same 9 though? That’s the real trick.

I have 10 total and that has stayed the same 10 for 3 plus years. Key is to keep them well fed often to avoid constant picking.

 

[Twoddler]

Are they the same 9 though? That’s the real trick.

Same 9

 

[PatW]

Chromis have a tendency of murdering each other. Currently, I have one and it does fine. In a 20 gallon, one chromis is probably plenty.

 

[Sean Clark]

Jeff does just fine all by itself... Because Jeff murdered all of the others chromis...

 

[blaxsun]

Jeff does just fine all by itself... Because Jeff murdered all of the others chromis...

Jeff looks hungry.

 

[Sean Clark]

Jeff looks hungry.

More like thirsty for blood.