有關魚的英語作文

篇一：魚的介紹英語

A fish is a water-dwelling vertebrate with gills that doesn't change form, as amphibians do, during its life. Most are cold-blooded, though some (such as some species of tuna and shark) are warm-blooded. There are over 29,000 species of fish, making them the most diverse group of vertebrates. 魚用鰓是一種水生脊椎動物，不改變形式，兩棲動物，在其生命周期。大部分都是冷血，雖然有些如某些種類的金槍魚和鯊魚)是溫血動物。有超過29,000

種魚類，使他們最多樣化的脊椎動物。

Taxonomically, fish are a paraphyletic group whose exact relationships are much debated; a common division is into the jawless fish (class Agnatha, 75 species including lampreys and hagfish), the cartilaginous fish (class Chondrichthyes, 800 species including sharks and rays), with the remainder classed as bony fish (class Osteichthyes).

分類學上，魚是一種系群，其備受爭議的確切關系;一個共同的分工是無頜魚類無頜類，75種，包括七鰓鰻和盲鰻)，軟骨魚類軟骨魚，800種，包括鯊魚和鰩魚)，其餘歸類為硬骨魚類硬骨魚綱)。

Fish come in different siz