How many chromis in a 65g?

impreza · 03/16/2006, 03:23 PM

Hi,

I have a 65G tank (18"Dx24"Hx36"L) with about 60lbs LR and 2 true percs. How many chromis can I safely introduce into my tank without over loading it? I want the "schooling" look.. haha

Lev F. · 03/16/2006, 03:29 PM

Chromis aren't good schoolers. If you want the schooling look, then get 5 Threadfin Cardinals.

Blown 346 · 03/16/2006, 03:30 PM

You could 5 or 6, I like them Mine school.

SEAFLOWERS · 03/16/2006, 03:34 PM

I have four in my 70gal. and they school just fine.

zimmy1979 · 03/16/2006, 04:12 PM

I bought 5 and 2 of the big ones killed off the rest. Then the last two kept fighting until I got rid of them.

Lev F. · 03/16/2006, 04:20 PM

Mines schooled loosely until they killed each other.

drnkjunglist · 03/16/2006, 04:33 PM

ya everytime i get chromis i get like 5 or 6 and they all eventualy kill eachother from fighting , or just start disapearing.

mikeshook · 03/16/2006, 04:45 PM

Major Misconception about Chromis. They do NOT school...they Shoal. The difference being that they stay together for safety not because they like each other. As they mature and feel safer in your tank...they will abuse their tankmates as they no longer need them for safety. Unless you have a large enough tank to support them.

If you want a schooler go with the Cardinals.

21Reefman · 03/16/2006, 04:50 PM

Get 10-15 and you might be left with 4-6. I think these must be cyanide caught often, they always come up missing! My buddy has a 400gal and he put in 100 (ok 98), he had the LFS special order them for him. In 3-5 days he only had 6 left and 2 weeks down to 4. All other fish and coral was unaffected and water was in perfect parameters. It turned me off to chromis for good!

What if 10 people had each bought 10 fish, I think you would have 10 people thinking it was thier tank, when the fish were swimming corps to begin with.

Others have had the same chromis (or 7) for years with only happy schooling to report.

JmLee · 03/16/2006, 04:57 PM

do most cardinal fish school or only specific species?.

21Reefman · 03/16/2006, 05:10 PM

The key to any fish school is the male / female ratio. If you have all of one sex there will be more fighting than schooling. The ideal ( though impossible to realize) would be 1 submissive male with other submissive females. As opposed to alpha males and dominant females.

Blown 346 · 03/16/2006, 06:02 PM

Thats good info to know, I will have to remeber that, Maybe my chromis should go back before they kill eachther off.

21Reefman · 03/16/2006, 06:08 PM

If yours are schooling then you have a good happy group. I would think they will be fine.

03/16/2006, 03:23 PM	#1
impreza Registered Member Join Date: Jun 2003 Location: Calgary, Canada Posts: 166	How many chromis in a 65g? Hi, I have a 65G tank (18"Dx24"Hx36"L) with about 60lbs LR and 2 true percs. How many chromis can I safely introduce into my tank without over loading it? I want the "schooling" look.. haha

03/16/2006, 03:29 PM	#2
Lev F. Registered Member Join Date: Nov 2004 Location: Ontario, Canada Posts: 1,109	Chromis aren't good schoolers. If you want the schooling look, then get 5 Threadfin Cardinals. __________________ - Lev "It all starts with a small freshwater aquarium. Then it turns into miniature estuaries on the carpet, and an afterwards fragrance that has the power to kill anything that's ever lived" Current Tank Info: 65 Gallon Mixed Reef Tankh. 96 Watt COralife Aqualight PCS, 20 Gallon Refugium with A. Nummifer frogfish, 40 Gallon Octopus tank

03/16/2006, 03:34 PM	#4
SEAFLOWERS Premium Member Join Date: Apr 2005 Location: yorktown,va. Posts: 366	I have four in my 70gal. and they school just fine. __________________ If humans can control the temperature on earth, then dammit I want it 70 degrees and sunny everywhere! Current Tank Info: 20 gal.sump,Euro-reef RS6-2+ Skimmer,2x175 SE 14000k Iwasaki bulbs+(2)T-5 39 watt bulbs.Mag 12 return pump, (3) Tunze nanostreams (6025)

03/16/2006, 04:20 PM	#6
Lev F. Registered Member Join Date: Nov 2004 Location: Ontario, Canada Posts: 1,109	Mines schooled loosely until they killed each other. __________________ - Lev "It all starts with a small freshwater aquarium. Then it turns into miniature estuaries on the carpet, and an afterwards fragrance that has the power to kill anything that's ever lived" Current Tank Info: 65 Gallon Mixed Reef Tankh. 96 Watt COralife Aqualight PCS, 20 Gallon Refugium with A. Nummifer frogfish, 40 Gallon Octopus tank

03/16/2006, 04:50 PM	#9
21Reefman Registered Member Join Date: Feb 2006 Location: Chicago/NW IN Posts: 403	Get 10-15 and you might be left with 4-6. I think these must be cyanide caught often, they always come up missing! My buddy has a 400gal and he put in 100 (ok 98), he had the LFS special order them for him. In 3-5 days he only had 6 left and 2 weeks down to 4. All other fish and coral was unaffected and water was in perfect parameters. It turned me off to chromis for good! What if 10 people had each bought 10 fish, I think you would have 10 people thinking it was thier tank, when the fish were swimming corps to begin with. Others have had the same chromis (or 7) for years with only happy schooling to report. __________________ "The significant problems that we face cannot be solved at the same level of thinking we were at when we created them." Albert Einstein

03/16/2006, 03:30 PM	#3
Blown 346 Registered Member Join Date: Apr 2004 Location: Rockford, Illinois Posts: 6,596	You could 5 or 6, I like them Mine school.

03/16/2006, 04:12 PM	#5
zimmy1979 Premium Member Join Date: Dec 2005 Location: City of Angels Posts: 405	I bought 5 and 2 of the big ones killed off the rest. Then the last two kept fighting until I got rid of them.

03/16/2006, 04:33 PM	#7
drnkjunglist Premium Member Join Date: May 2004 Location: long beach, ca Posts: 143	ya everytime i get chromis i get like 5 or 6 and they all eventualy kill eachother from fighting , or just start disapearing.

03/16/2006, 04:45 PM	#8
mikeshook Registered Member Join Date: Jan 2004 Location: Charlotte/Houston Posts: 147	Major Misconception about Chromis. They do NOT school...they Shoal. The difference being that they stay together for safety not because they like each other. As they mature and feel safer in your tank...they will abuse their tankmates as they no longer need them for safety. Unless you have a large enough tank to support them. If you want a schooler go with the Cardinals.

03/16/2006, 04:57 PM	#10
JmLee Registered Member Join Date: Jan 2006 Location: Hohensfels, Germany Posts: 1,545	do most cardinal fish school or only specific species?.

03/16/2006, 05:10 PM	#11
21Reefman Registered Member Join Date: Feb 2006 Location: Chicago/NW IN Posts: 403	The key to any fish school is the male / female ratio. If you have all of one sex there will be more fighting than schooling. The ideal ( though impossible to realize) would be 1 submissive male with other submissive females. As opposed to alpha males and dominant females. __________________ "The significant problems that we face cannot be solved at the same level of thinking we were at when we created them." Albert Einstein

03/16/2006, 06:02 PM	#12
Blown 346 Registered Member Join Date: Apr 2004 Location: Rockford, Illinois Posts: 6,596	Thats good info to know, I will have to remeber that, Maybe my chromis should go back before they kill eachther off.

03/16/2006, 06:08 PM	#13
21Reefman Registered Member Join Date: Feb 2006 Location: Chicago/NW IN Posts: 403	If yours are schooling then you have a good happy group. I would think they will be fine. __________________ "The significant problems that we face cannot be solved at the same level of thinking we were at when we created them." Albert Einstein