I have had many different saltwater fish but after setting up my 15g full reef nano I was having trouble finding a small open water swimming fish. If anyone is in the same boat look no father than a simple blue/green chromis best 5$ I spent yet in this hobby. After adding the chromis tonight he has not stopped swimming and circling the tank while riding the tunze's flow. Also, has not shown any aggression to the perc, but the perc has chased him a few times. Just wanted to share my new fish with everyone. Anyone else have love for chromis?
Green Chromis...new favorite fish?
- Thread starter jrockssvt
- Start date
new_world_disor
Active member
chromis rock. i have 6 in my 75g. awesome little fish. always active and as mentioned above. amazing colouring/reflectivness haha
Diatome
New member
Only real problem is when they have bene in the tank for a year or so and one becomes dominant. Having bigger fish around to scare them actually seems to help. When they get big enough to threaten other fish, one tends to get agressive and large groups suddenly start to be whittled down to a pair and the male will hound the female until she dies an dthen you have one fish. It's been posted many times. Flow, lots of rockwork and bigger tank mates are the best way to prevent this. I have one in my 60 and it is a fun fish but I will never try a group again, unless I have a 120 or 200 gallon so they have room.
I have had 4 for over a year now. I feed my tank twice a day and they have doubled in size. Actually one of them is smaller.
Coffman34
New member
Same problem with one becoming dominant. After I removed the second green chromis before he was killed, the bigger one began to go after my pair of fire fish. I said no no, and he made the short trip back to the fish store. And the smaller of the two chromis eventually died. Just got picked on way to much.
sk8rreefgeek
New member
ya, 3 for $8 at Kalypso. they are cool. the ones they have in their display are HUGE
they add a lot to the tank
they add a lot to the tank
Neptune777
Premium Member
I have 3 in QT right now.... can't think of any other green reef safe fish to choose from . They're beautiful!
Here's one of them
Here's one of them
SWaquariast
New member
Be careful blue chromis get around 5". My green chromis were mean(I had 2) and I am guessing that one of them had a defect and the other one harrassed the other one to death. So once I got my $32 each clownfish(bought 2) and a six line wrasse($22). Well any way the chromis started to pick on them so I had to put him down. 
Recently I am thinking that on getting a couple more in my 20g reef aquarium. My fish are 2 ocellaris clowns and a six line wrasse. Then I have a 100 seaclone protein skimmer and a HOB filter. How many do you think I can get.
Recently I am thinking that on getting a couple more in my 20g reef aquarium. My fish are 2 ocellaris clowns and a six line wrasse. Then I have a 100 seaclone protein skimmer and a HOB filter. How many do you think I can get.
fewskillz
New member
Mitch, as long as you're up on your water changes I don't see why you couldn't add 1 chromis.
I had 4 fish (clarkii clown, blue damsel, purple stripe dottyback, and a green chromis) and a condy anemone in my old 20 gallon before without a skimmer. I did a weekly 3 gallon water change and everything was fine, I would not recommend that to any but the most dedicated of maintenance nuts though. I also wouldn't call what I had long term success, that tank was only setup about 8 months before I upgraded. But with a skimmer, I think 4 medium sized fish in a 20 will be fine.
I had 4 fish (clarkii clown, blue damsel, purple stripe dottyback, and a green chromis) and a condy anemone in my old 20 gallon before without a skimmer. I did a weekly 3 gallon water change and everything was fine, I would not recommend that to any but the most dedicated of maintenance nuts though. I also wouldn't call what I had long term success, that tank was only setup about 8 months before I upgraded. But with a skimmer, I think 4 medium sized fish in a 20 will be fine.
