Originally Posted by rara12
some sharks just sit and some move more, its really a personnality thing.
Incorrect. There are two types of sharks...bottom dwellers and then there are requiem sharks.
Bottom dwellers - Nurse Sharks, Cat Sharks, Epaulette Sharks, etc. These sharks mainly lay on the bottom, unless actively hunting...hence why they're called bottom dwellers.
Requiem sharks - Reef Sharks, Blue Sharks, Tiger Sharks, White Sharks, etc. These are constantly moving, mainly open water species. They do not lay around and swim 99% of the time.
It does not matter the "personality". If they're bottom dwellers, they're going to lay around and become active mainly at dusk and dawn (natual feeding times). Then, you will see alot more activity. My two Banded Cats would patrol the tank, cruising in the same pattern, over and over, at dusk and dawn.
If they're a requiem species, they will swim and be active most of the time.
Originally Posted by rara12
Rays from what i have herd are usually moving but not always.
Also incorrect. When not disturbed or aggitated, Rays will bury themselves and stay buried for the majority of the time, unless hunting or disturbed.