Chromis Hell in less than 24 hours.

What size is your tank? Chromis from all my experiences are very peaceful but also need open swimming space. If there is enough room for all, they will calm down. They do tend to pick on eachother but don't mess with other fish. Something is missing from the story.
40 gallon.
 
What size is your tank? Chromis from all my experiences are very peaceful but also need open swimming space. If there is enough room for all, they will calm down. They do tend to pick on eachother but don't mess with other fish. Something is missing from the story.
They were swimming in circles in a group all the morning but would spazz on anything that swam by. They’re all a little bit bigger than an inch? With the biggest being comparable to a golf ball.
 
I have had groups of them before without any real issues. The size of tank is probably playing into the aggression, 40 gallon tank don’t seem to small , but depending on the amount of rock in the tank. They are more of an open area fish that stsy in the water column and not in the rock from my experience
 
Make the fish happy. They need ideal water parameters, high quality food, and plenty of caves and hiding places. A 40g breeder is not a lot of room for that many fish.
 
Make the fish happy. They need ideal water parameters, high quality food, and plenty of caves and hiding places. A 40g breeder is not a lot of room for that many fish.
My water quality food quality and aqua scape is fine I’ve never had any serious issue other than ich but for a completely different tank. I was told they need a 30 gallon minimum and what I had currently was fine and didn’t plan adding any more fish. The only thing occupying the swimming space is my clowns and fire fish my goby never leaves the cave and my Blenny never leaves the perch. This wasn’t an impulse buy I was looking to fill my tank and spent the good portion of a half hour making sure this was suitable and was told by the gentleman at one of my fish stores it was. If anything when my 60g is finished I’ll move them there.
 
I have had groups of them before without any real issues. The size of tank is probably playing into the aggression, 40 gallon tank don’t seem to small , but depending on the amount of rock in the tank. They are more of an open area fish that stsy in the water column and not in the rock from my experience
I honestly might just find someone to take them or put them in my 60g in a couple weeks depending on finances. Appreciate the response though.
 
I heard the chromis need an aggressive fish to keep them from becoming too aggressive or turning inward and killing each other. I was going to take out my blue damsel but he is really good at tormenting the 5 chromis I have in a 120.
 
EVERY time I tried chromis they always kill each other off until there’s one or two left. They also carry diseases quite frequently.

Its been 10+yrs now since I tried them last; I will never spend my money on them again!
 
I heard the chromis need an aggressive fish to keep them from becoming too aggressive or turning inward and killing each other. I was going to take out my blue damsel but he is really good at tormenting the 5 chromis I have in a 120.
I’m hoping my Blenny will do this. It honest to god seems like he was trying to pick a fight.
EVERY time I tried chromis they always kill each other off until there’s one or two left. They also carry diseases quite frequently.

Its been 10+yrs now since I tried them last; I will never spend my money on them again!
Starting to feel the same way lol.
 
Realizing it is a 40g, that is part of the problem. Just too many in that space. You could keep one or maybe two if they paired okay. Also, the really dark caribbean blue ones (Chromis cyanea) are really pretty and maybe one of those would be prettier than the bland green/blue ones (Chromis viridis).
If you also have a 60g, try moving two to the 60 and keeping one in the 40. May add the color and movement without the aggression.
 
Realizing it is a 40g, that is part of the problem. Just too many in that space. You could keep one or maybe two if they paired okay. Also, the really dark caribbean blue ones (Chromis cyanea) are really pretty and maybe one of those would be prettier than the bland green/blue ones (Chromis viridis).
If you also have a 60g, try moving two to the 60 and keeping one in the 40. May add the color and movement without the aggression.
Ok so I called the Store and spoke to the owner he apologized and said he will give me store credit and a 15% off my transaction coupon, they’re family owned and said his nephew helped me and would not have recommended 4 for my size tank. Problem is he asked if I can come in today being as he would want them back within the 24 since he now has to QT them he said. Any idea how I can catch these things without tearing up my aqua scape I’ll literally kill my pistol and goby by doing this. Anyone on here have any suggestions? Would really like my money back and can use this for supplements or maybe a new frag.
 
I’m hoping so my Snowflake clowns were my first salt water fish ever if they die I may be a grown man but I’ll cry like a baby lol. I love those guys they’ve been on the journey since the beginning.
I quit the hobby when the Black Ice clown I had for 4 years got sucked into a tiny hole in my skimmer grate and died.
 
Sorry cant help there. I 3D printed out a fish trap for my damsel before seeing this post about Chromis and damsels that I mentioned above. The only fish that went into the trap on first drop was my Dottyback. I've been acclimating the fish to the trap now for a few days and still hope to get my filefish before he finishes eating all my Zoas.
 
Like damsels, they have mixed personality and also there is a difference with wild caught and tank raised.
They do best in off numbers and as mentioned can shoal peacefully or similar to damsels, be a tank terror chasing other occupants, cornering them, stealing the food at feeding and fight amongst each other.
 
Very little chance of catching them without some clever work on your part. Get them cornered into the side of the tank if possible and then use large nets to slowly work on one at a time. Tricky, but can be done. Not always so easy to catch and it will take to long to use a trap.
 

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