Question

If Fishes have hollow bones, then where do RBCs are formed in them?

Answer 1

It's the tissue in hollow bones that produces red blood cells?
Do you know how it's called?

Answer 2

No

Answer 3

Ever heard of bone marrow? :P

Answer 4

yeah

Answer 5

Well that's where RBC's are formed :)

Answer 6

Ohh i got now!

Answer 7

thnx :)

Answer 8

you're welcome \(\Huge\ddot\smile\)

Answer 9

But if I just change my ques. like
Birds also have hollow bones and don't have bone marrow in them so where RBCs are formed in them?

Answer 10

As far as i know, erythrocytes are only produced in red bone marrow in a process called erythropoiesis.

Answer 11

I don't think they have bone marrow since they have hollow bones which provides them good flight

Answer 12

Bone marrow is also in flat bones, birds also have plenty of those.