鯉 is a Japanese kanji written with 18 strokes, listed here under the keyword “carp”. It is built from 魚 (fish) and 里 (ri). In Remembering the Kanji by James W. Heisig it is frame 188.
On KumiJi Glyph Explorer, open the parts search and type “fish” + “ri”. 鯉 is among the results, together with every other character containing the same shapes.
Open 鯉 in the interactive kanji search
to expand every part down to its smallest pieces, add your own names and mnemonic stories,
or search for other characters by their parts.