They're chordates , have a notochord and spine, and thus are endoskeletal.
no
1 year.
ectotherm
ectotherm
A goldfish is an ectotherm.
An ectotherm
It's an ectotherm
They are poikilothermic ectotherms.
Jellyfish have no blood.
An ectotherm, meaning it relies on external temperatures.
ectotherm.....