Griseum,
Thanks for trying to help. I wouldn't say the sharks were shaking their heads, but more their whole bodies. It just looked like a a quick twitching when they would swim to find another place to lay.
I would cut the food in small pieces and soak it in a garlic solution. I have noticed a bloated stomach before, especially in the larger shark. I used squid at first, but when i wanted to buy more, they were out and I tried octopus. The other fish were in there before both sharks hatched. I noticed the tangs bothering each other at first but not the sharks.
The tank is a bit small, around 100g, because I was setting up a larger tank for the sharks at the time. For filtration I have live rock, a protein skimmer, and a refugium.
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