Questionable Piranha Tank-mates

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What a beast! Makes that 180 look like a 10!
How long have you had him to get him that big?


I got him at this size in late 2018, he was imported in 2017 at this size and sat at the store until I found him and picked him up.

Generally, Rhoms don't grow to this size in the aquarium when you buy them small, the largest I've ever heard anyone grow a Rhombeus out (black or diamond) is about 13" TL.
 
What do you feed him I feed mine krill but trying to get him on pellets


All of my other piranhas eat pellets but this rhombeus never likes it. He only eats fish fillets like Tilapia but i mainly feed him Silversides stuffed with B12 vitamins and sunflower seeds.
 
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I got him at this size in late 2018, he was imported in 2017 at this size and sat at the store until I found him and picked him up.

Generally, Rhoms don't grow to this size in the aquarium when you buy them small, the largest I've ever heard anyone grow a Rhombeus out (black or diamond) is about 13" TL.
Wow how much you pay for him
 
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