Definition of a fish

Question: Kindly define the fish.

Answer: As research done by one of the scholars (a Muftī Sahib at the Dār-ul-Iftā of Dawat-e-Islami) is given below with some changes: There is no final and precise definition from any books of Islamic jurisprudence or (dictionaries). Ancient and modern experts have defined fish, which can be summed up that the?fish is a limbless cold-blooded animal (living completely in water), which is from the family of vertebrate (having a backbone or spinal?column), but there are many species of fish that do not have a backbone or spinal column. Many fish use gills to breathe and fins to move. Many of them lay eggs while some have babies. Some species are also able to fly briefly.