Looks like a kel to me, but it could be different. I'm not 100% positiveis it kelberi?
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I offer them a small pellet which my tiger ate when he was small. also tried my other arowana food.. he still not eat at all.. maybe I need to put him in different tank not in the nest.. and give him some bloodworm.Looks like a tem to me Post a better picture, and they usually will eat right away unless your offering them a food that they don’t like.