Chromis Behaviour problem

[silentcivilian]

Ok, so all 3 of my chromis are acting very very very out of character.. and Im wondering if I should be worried. They hide.. all the time unless food is in the water.. even then, sometimes dont come out.. they appear fine in color and still seem to be of a good size.. but to make things clear.
Smallest: Hides behind the heater at the back of the tank on the left side or inder the left side aquaclear.
Middle sized: Hides at the front right portion of my tank at the top of the glass with his mouth almost out of the water
Biggest (about the size of a big clown): Hides in the rock work in the middle of the tank..

Chromis to my understanding are grouping open water fish.. and until a month ago did such as a group of 3 for almost 2 years.. now see above to see the huge change..

Why would they change this much.

New corals to system - several leathers
New fish to system - 1 red scooter blenny, 1 red mandrin, 1 yellow clown goby

[gobytron]

can you list all of your inhabitants?


i used to have a blue/green chromis that hid all the time except when feedin and at the time was the biggest fish in my tank.

[silentcivilian]

All of them.. geez..
3 green blue chromis
2 Perc Clowns
1 yellow tang
1 coral beauty
1 rusty angel
1 Benggai Cardinal
1 Cleaner Wrasse
1 Yellow Clown Goby
1 Red Mandrin
1 Red Scooter Blenny
1 Lawn Mower Blenny
Various Crabs - Scarlet, Halloween, Blue legged, algae, emerald
Various Snails
1 peppermint shrimp
1 sandsifting starfish

[Wayne]

Any of the angels or the tang being aggresive towards them?

[silentcivilian]

I sat and watched, but not that ive ever seen

[Wayne]

From my observation of chromis's hiding in rock work is not uncommon. My little guys still school (5) together because I have some larger fish in the tank that keep them together. I have noticed that without a "predator" they very well may find there own little hiding spots... Although the small and medium ones certainly have strange spots