Tank raised Purple Tangs!

[Salty150]

Tank raised Purple Tangs!

Where do we get them?

https://www.youtube.com/watch?v=68v0qDMvutw

[Fish finder]

Sign me up

[evolutionZ]

i would love to have one, they cost a bomb in my country!

[slgcmg]

Wow. That's amazing!

[WLachnit]

Indeed!

[D-Nak]

These are not captive bred, correct?

I just don't want people to confuse "tank raised" with "captive bred" as the term is used loosely.

[Salty150]

Originally Posted by D-Nak

These are not captive bred, correct?

I just don't want people to confuse "tank raised" with "captive bred" as the term is used loosely.

Oh... that is interesting...

[WLachnit]

Originally Posted by Salty150

Oh... that is interesting...

Doh! .....good point. I misinterpreted.

[Assasi]

I like the gem tang i'm tank raising better.

[Salty150]

I wonder which it is... tank breed and/or tank raised...

I mean, tank raised is still a good thing!

[slgcmg]

What's the difference??

[Fish finder]

Tank bred would mean not taking from the wild, born in captivity

[pfan151]

Originally Posted by Assasi

I like the gem tang i'm tank raising better.

Gem tang with a haddoni? Daring.

[D-Nak]

Originally Posted by pfan151

Gem tang with a haddoni? Daring.

I was thinking the same thing! I envision the haddoni closing up like a Venus flytrap (not that they do this) and having an expensive meal.

[OrQidz]

Isn't tank raised where they collect the larval fish and raise them up from there? Still from the wild but most larval fish don't survive to adulthood so not depleting the population of adult fish. And maybe they are more used to captive conditions, so probably a good thing.

[Tripod1404]

Tank raised means fish were collected immediately after larval settlement and raised in captivity. They had wild parents that mated in wild and their whole larval stage took place in the wild.

Captive bred means parents mated in captivity and the egg development, larval stage and larval settlement and post-larval development all happened in captivity.

As a side note, tank raised fish are one of the most sustainable ways of collecting aquarium fish. Fish produce far more offspring that would survive. So most of the larvae that manages to settle will not reach adulthood. By collecting fish at this early state, you cause minimum amount of damage to the breeding population and since there is always excess offspring, some reach adulthood and population remains healthy.

You can think of this like the following example; Lets say the environment only supports 50 new fish each year. But each year fish produce around 1000 offspring that reach to their post-larval stage. Even if you catch 500 of the fish just reached past-larval stage, there would still be 10 times more fish in the ecosystem than that would reach to adulthood. So the population remains healthy.

[Salty150]

Hey, I'm all for it.

It should bring down the costs substantially.

And make for healthier, and happier, fish.

It sounds like a win-win.

[Gorgok]

Originally Posted by Tripod1404

You can think of this like the following example; Lets say the environment only supports 50 new fish each year. But each year fish produce around 1000 offspring that reach to their post-larval stage. Even if you catch 500 of the fish just reached past-larval stage, there would still be 10 times more fish in the ecosystem than that would reach to adulthood. So the population remains healthy.

Not to knock it that bad, but those 500 you catch and remove would not just go poof if left in the system, but become a food source that some other thing might be dependent on. So yeah, it isn't the same as removing adult fish in droves, but it still will have impact to some degree.

On a worst case view it may lead to less predators because of lack of food, which then causes a population boom of the target species which then leads to them stripping the environment of their food source and a population collapse. To go that far it would have to be pretty substantial larval harvest though... And a substantial adult harvest would basically skip all the previous steps to the last one anyway (and then in turn lead to the first one).

[CrayolaViolence]

Not to mention, how do you know the one fish that has the strength to survive, isn't the one harvested?

[Ohioreefer7]

How do they get the settled larval fish?

[Salty150]

How many do they have in that tank - 200?

That is probably less eggs than 1 female tang lays at a time.

[D-Nak]

Originally Posted by Ohioreefer7

How do they get the settled larval fish?

Well, that's where it gets a bit sticky. Apparently the definition of "tank raised" covers any tang that's 2" or smaller.

Don't get me wrong -- I don't think this whole situation is a bad thing, I just wanted to make sure that people understand that these fish are not born in captivity. As previously mentioned by others, there are good and bad things to consider when deciding which -- wild caught or captive/tank raised fish -- is better.

[JZinCO]

Originally Posted by Gorgok

Not to knock it that bad, but those 500 you catch and remove would not just go poof if left in the system, but become a food source that some other thing might be dependent on. So yeah, it isn't the same as removing adult fish in droves, but it still will have impact to some degree.

On a worst case view it may lead to less predators because of lack of food, which then causes a population boom of the target species which then leads to them stripping the environment of their food source and a population collapse. To go that far it would have to be pretty substantial larval harvest though... And a substantial adult harvest would basically skip all the previous steps to the last one anyway (and then in turn lead to the first one).

Yes you got it. Not that it wouldn't necessarily lead to collapse of the predator. Predators often broaden their diet once their most profitable meals decline in abundance. So they can switch to other fish larvae, perhaps algae, coral, etc. What are ramifications are depend on the blue tang larval predator, how general its diet can be, and how the prey-switch alters the population of the other prey.
It's like Leopold said, when you tug at one string in a system, you find it connected to everything else in the universe.

But um.. tank raised Tang. neat.

[Salty150]

This isn't going to lead to the "collapse" of anything...

Again, how many tangs are in that tank? 200+?

That is probably less than 1 tang releases at 1 time.

[saf1]

There is a food chain for a reason and all this is factored in. Humans try to play God and while the intent is very noble the price never shows up on the market. Personally I can see good and bad but then again I'm a pretty active scuba diver and see how fish interact with larvae, eggs, and mother nature in general.

By no means am I judging and it is a step in the right direction but don't think the price is going to drop anytime soon. If at all. Just look at ORA for an example.