No. Fish are not mammals.
yes
Catfish lay eggs.
Yes, a catfish is a type of shark.
Yes, catfish is a compound word.
Yes, catfish are consumers.
No, female catfish lay eggs which are then fertilized outside of their bodies. Menstruation, the discharge of unfertilized eggs which are intended to be fertilized inside the body, is a feature of mammals.
yes, catfish reproduce asexually
Catfish do not swim in the ocean, they are found in rivers, creeks, and fresh water ponds.
Yes. Most catfish contain some iodine.
yes they did discover the blue catfish
Yes