Confused

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Drstrangelove said:
I don't know the exact amount (each species is different), but I don't think it's unreasonable at that size / age to give them 5-10% of their body weight per day. 10% may be a bit high, but 5% is at least what I would expect.

You could calculate their size and the food amount and see what that works out to.

The food quality looks good, except you might be missing some nutrients at that age. I don't know if cichlid pellets are great for rapid growth.
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Maybe I'll try Massivore.


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The Pangasius commonly called the paroon is the Pangasius sanitwongsei a very aggressive species. The species of Pangasius you have is that is most commonly sold is the Pangasius sutchi. Common name Iridescent Shark. The Iridescent can grow to 3ft but takes a long time. There not fast growers not like a Redtail catfish. The Iridescent shark is not an aggressive sp. The sanitwongsei is a predatory catfish and will eat other fish it can fit in its mouth which makes them grow a lot faster.
 
MyGiants said:
The Pangasius commonly called the paroon is the Pangasius sanitwongsei a very aggressive species. The species of Pangasius you have is that is most commonly sold is the Pangasius sutchi. Common name Iridescent Shark. The Iridescent can grow to 3ft but takes a long time. There not fast growers not like a Redtail catfish. The Iridescent shark is not an aggressive sp. The sanitwongsei is a predatory catfish and will eat other fish it can fit in its mouth which makes them grow a lot faster.
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Just a pedantic note: The current name of the fish is Pangasianodon hypophthalmus http://www.planetcatfish.com/catelog/species.php?species_id=172 It has been assigned to a different genus from Pangasius.

Yes, people's experience with the growth of "this fish" varies, as the link I provided describes. Until recently when I learned from other keepers, I was under an impression that IDSs grow to 1.5'-2' in the first year under good and proper care. There seem to lie some kind of yet unexplained contradiction in the reports of the hobbysts.

Vanimal, would you, please, post a good photo of your fish, describe your tank, care, and your observations in that thread too - we definitely could use more data and learn together. Coming back with updates always helps tremendously too.
 
I think growth has a lot to do with how aggressive the fish eats and what diet it is given. Some eat more aggressively then others not everyone who keep ID sharks feed the same way or the same food. Some people only feed there fish only once a day a some feed 2 times a day and some people feed there fish 3 times a day. Most ID that are sold are about the 1.5-3" size. We can say this is still a baby considering the size it can get in the wild. I know from raising fish from fry to 6-7 months some will outgrow there siblings 2,3,4 times as fast. All getting the same food the same water conditions. But the only difference is those that grew bigger faster ate more aggressively from the start.Now ID sharks have been known to be very skittish when little. Can become very shy and not eat for days even weeks when kept singly in a new tank this can cause stunting IMO. But I think it can still grow big eventually just at a slower pace if fed moderately. But once it becomes an aggressive eater and is given all the food it can handle daily I feel they can grow much faster then only being fed once a day.
 
I feed twice a day because all they eat now are frozen blood worms and cichlid pellets. When they were younger they would take shrimp pellets but now just ignore them. I feed cichlid pellets to my blood parrots but they eat them too. I'll try to post a picture.

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