What's the recomended quantity of fishes in a tank?

[sohal2009]

Hi there,

Need some adv from experience bros bout the right quanties of fishes to put in a tank.

Tank spec : 6.5x2.5x2.5ft with lots of live rocks.

Live stocks :

5 Damsels

6 wrasses ( mix ) couldn't remember which kind (M)

1 twin spot wrasse (L)

1 Saddle Wrasse (M)

1 Cortez Wrasse (M)

1 Yellow wrasse (M)

1 Blue tang (L)

3 Yellow Tang (L)

2 Purple Tang (XL)

1 Chevron (L)

1 Ear spot Angel (M)

1 Passer Angel (M)

1 Naso tang (M)

1 Belarus Angel (M)

1 Lineatus Angel (M)

2 Hawaiian Flame fairy wrasse (M)

1 Maculouses Angel (S)

2 Personifer Angel (S)

1 Queen Angel (M)

1 Asfur Angel (M)

1 french bAngel (m)

1 Sohal tang (M)

1 Nigger trigger (S)

1 Barttlet Anthias (M)

Total 38 now....

Planning to add more :

Townsend queen

Bandit angel

Maculouses angel (M)...Can mix together with S Maculouses?

Conspic or Gem tang ( Will the Gem Tang survive in the Tank cause tried twice with the blck tang but couldn't survive ( got attack by other tangs )

Pls Pls help adv me on this issiue. I really need opinions from eperience Bros out there. Really appreciate. And Thanks in advance

[comycus]

What are your tank parameters like? Other than bioload, you also should consider the amount of swimming space your fishes have. More fish=less swimming space=more stress.

I personally think you have more than enough fish in your 6 footer. I would keep even lesser fish. But tt's just me.

With your sohal and 2 xl purple tangs, I would forget about adding anymore fishes. As good as $ down the drain and murduring precious lifestock.

[Solo77]

think u might have forget on some angels and tangs....especially those u mentioned....high chance they can't survive unless you remove your existing tangs and angels....for bandit...even if introduce as first fish, you must get it feeding before can talking about survival.....

[poomoon]

What are your tank parameters like? Other than bioload, you also should consider the amount of swimming space your fishes have. More fish=less swimming space=more stress.

I personally think you have more than enough fish in your 6 footer. I would keep even lesser fish. But tt's just me.

With your sohal and 2 xl purple tangs, I would forget about adding anymore fishes. As good as $ down the drain and murduring precious lifestock.

+ 1 on this ... less space, more swimming into each other, considering some area hosting ... bang ! can be quite stressful to most i guess.

[Solo77]

For the tank size, must be very nice to see all yr fishes swimming around. For your angels and tangs, as long they live in harmony with ocassional chasing, it should be fine. For your wrasse, u better have your tank top covered incase they got stress and start flying and die of suffocation....lol. Think you got fish poison like me....maybe can pay you a visit to see your fishes. : )

[FuEl]

That bioload looks more like for a 12ft tank. Do keep in mind that fishes will grow & bioloads will increase as a result. Will your liverock be able to cope with such increases in bioload? You also need to keep dissolved oxygen levels in mind, the dissolved oxygen levels in seawater are far below that of freshwater. If you put more liverock, you are effectively reducing your total water volume, meaning the more rock you add, the more your fish is being cramped in water. This can be disastrous if you have many fish. Dissolved oxygen levels might not be able to be sustained in limited water volume. Do note that nitrifying bacteria use up oxygen as well, not only the fish.

I would recommend that you lower the fishload by at least 50% to take their growth into account. Also remove the trigger as it will likely end up pestering your tank mates. Use a skimmer with a high turnover rate, beckett skimmers are well-known for this. If it is a fish-only tank, run it at half saltwater strength, 1.010-1.012, to reduce your risk with pathogens and also to increase dissolved oxygen levels. Get a dissolved oxygen meter. Levels of D.O should be between 6-8ppm. If dissolved oxygen levels drop below that, you are overstocking. Run a good UV unit to safeguard your fish against parasites.

If you can, invest in a chiller. It will lower the metabolism of your fishes and wastes will take longer to break down, giving your protein skimmer more time to extract the wastes. Overall your water quality will improve as a result.

[sohal2009]

What are your tank parameters like? Other than bioload, you also should consider the amount of swimming space your fishes have. More fish=less swimming space=more stress.

I personally think you have more than enough fish in your 6 footer. I would keep even lesser fish. But tt's just me.

With your sohal and 2 xl purple tangs, I would forget about adding anymore fishes. As good as $ down the drain and murduring precious lifestock.

Thanks for the adv Bro!

[FuEl]

A good link to read up more on oxygen.

http://www.aquaristsonline.com/blog/aquari...en-in-seawater/

Might also want to consider an appropriate sized fluidized bed reactor. These are the best filters for handling large bioloads. It's basically a tube with water pumped up through a bed of sand. Do oxygenate the water outlet from these filters as the water will be depleted from oxygen due to the high bacterial activity.

[sohal2009]

think u might have forget on some angels and tangs....especially those u mentioned....high chance they can't survive unless you remove your existing tangs and angels....for bandit...even if introduce as first fish, you must get it feeding before can talking about survival.....

The fishes seems to get along well and its feeding too. These fishes has been in the tank for 6 mnths already. I'm thinking putting few more angels but afraid of becoming too over crowded

[sohal2009]

For the tank size, must be very nice to see all yr fishes swimming around. For your angels and tangs, as long they live in harmony with ocassional chasing, it should be fine. For your wrasse, u better have your tank top covered incase they got stress and start flying and die of suffocation....lol. Think you got fish poison like me....maybe can pay you a visit to see your fishes. : )

LOL....yup! Wish could have a giant tank to collect all the angels !!!

[sohal2009]

That bioload looks more like for a 12ft tank. Do keep in mind that fishes will grow & bioloads will increase as a result. Will your liverock be able to cope with such increases in bioload? You also need to keep dissolved oxygen levels in mind, the dissolved oxygen levels in seawater are far below that of freshwater. If you put more liverock, you are effectively reducing your total water volume, meaning the more rock you add, the more your fish is being cramped in water. This can be disastrous if you have many fish. Dissolved oxygen levels might not be able to be sustained in limited water volume. Do note that nitrifying bacteria use up oxygen as well, not only the fish.

I would recommend that you lower the fishload by at least 50% to take their growth into account. Also remove the trigger as it will likely end up pestering your tank mates. Use a skimmer with a high turnover rate, beckett skimmers are well-known for this. If it is a fish-only tank, run it at half saltwater strength, 1.010-1.012, to reduce your risk with pathogens and also to increase dissolved oxygen levels. Get a dissolved oxygen meter. Levels of D.O should be between 6-8ppm. If dissolved oxygen levels drop below that, you are overstocking. Run a good UV unit to safeguard your fish against parasites.

If you can, invest in a chiller. It will lower the metabolism of your fishes and wastes will take longer to break down, giving your protein skimmer more time to extract the wastes. Overall your water quality will improve as a result.

Wow, thnks so much for the adv bro. Is there other vway beside reducing the fishes in the tank? I'm running on chiller with temp at 26.

Will it help if I remove the live rocks let say by 50%?

[comycus]

Wow, thnks so much for the adv bro. Is there other vway beside reducing the fishes in the tank? I'm running on chiller with temp at 26.

Will it help if I remove the live rocks let say by 50%?

Remove 50% LR and you will experience massive die-offs as your bio filtration crashes.

If your current system cannot support your current bioload, you can either choose to reduce the fishes in your tank voluntarily or involuntarily (when they die). The latter can also spark another cycle of dying off.

I think you can see my train of thought here...

[cool guy]

care to show some pic of ur tank bro....