Silver arowana/red fins

[Hao]

i usually crush the head of the krill lol

 

[meanbestorque]

You'll get that red fins if you continue to feed your silver aro with food that contain plenty of carotene. Prawn and shrimp would be some example of those type of foods. They are lucking in carotene if the find are not pinkish red.

To my understanding, carotene is only contained in certain vegetables for photosynthesis (with an exception of some dairy products), and cannot be produced by animals.

 

[ctoychik]

my silvers still got reddish edges on fins and tail ... the scales also have redish core (though quite faint)?

 

[uting]

i think carotene maybe inside the shrimp from the food that it ate?.

 

[King-eL]

To my understanding, carotene is only contained in certain vegetables for photosynthesis (with an exception of some dairy products), and cannot be produced by animals.

Shrimps and other crustacean contain carotene. That's what make them red when you cook them. They get that from the algae that they eat. Yes animals do not produce carotene but they are able to contain it from certain food that they ate.

 

[Juxtaroberto]

You could make your arowana's own food and add a lot of astaxanthin to it to make your arowana keep its red.

For example, I remember reading this "recipe" a while back...'

You basically take a bunch of meats, like beef heart, shrimp (prawns, I'm guessing, are the same as shrimp), a lot of seafood, you know? Then you chop it all up into small pieces and mix in a bunch of astaxanthin in it. I think you can buy it on the web. They sell it in bags (it's a red powder). You mix it all in good, and then you spread it in sheets and freeze it.

When feeding time comes, just cut/break it into pieces and drop it in the water. It's like regular store-bought frozen food in that it'll melt in about 1.2 seconds LOL.

 

[Hao]

just feed it dried krills,market prawns and it will have or keep red

 

[noonein2]

It's not a bad thing inless it looks like vains.

 

[meanbestorque]

Shrimps and other crustacean contain carotene. That's what make them red when you cook them. They get that from the algae that they eat. Yes animals do not produce carotene but they are able to contain it from certain food that they ate.

ohhhh okay, understood

 

[Juxtaroberto]

just feed it dried krills,market prawns and it will have or keep red

Except if you're gonna feed it that you're gonna have to take all the hard parts off, and THOSE are the parts that contain the most astaxanthin.

If you don't take them off they could damage the inside of your arowana and kill it. I remember there's a thread somewhere around here talking about people's arowanas who've died because of this.