鯛 means sea bream (tai) and is a JLPT N1 kanji. It has 19 strokes and uses the fish radical (魚).
Stroke order · 19 strokes
On'yomi (音読み)
チョウ
Kun'yomi (訓読み)
たい
Radical
魚 · fish
Strokes
19
How to remember 鯛
A fish (魚) admired all around (周) — sea bream. 鯛!! — celebrated at auspicious occasions for its resemblance to めでたい (auspicious); 鯛焼き is even shaped like it!