If you already know the Kanji for fish; 魚(sakana), you might easily guess the meanings of Kanji with Sakana-hen radical (魚).
There are a lot of fish names in Kanji with Sakana-hen radical.
Here’s some good examples that we often use in our daily life in Japan.
| Kanji | Hiragana | Romaji | English |
| 鮭 | さけ | sake | salmon |
| 鱒 | ます | masu | trout |
| 鮪 | まぐろ | maguro | tuna |
| 鯵 | あじ | aji | horse mackerel |
| 鰯 | いわし | iwashi | sardine |
| 鰹 | かつお | katsuo | bonito |
| 鯖 | さば | saba | mackerel |
| 鯛 | たい | tai | sea bream |
| 鱈 | たら | tara | cod |
| 鰊 | にしん | nishin | herring |
| 鰤 | ぶり | buri | yellowtail |
| 鱸 | すずき | suzuki | sea bass |
| 鰈 | かれい | karei | flounder |
| 鰻 | うなぎ | unagi | eel |
| 鱧 | はも | hamo | dagger-tooth pike conger |
| 鱚 | きす | kisu | sand-smelt |
| 鰆 | さわら | sawara | Spanish mackerel |
| 鮃 | ひらめ | hirame | sole |
| 鮎 | あゆ | ayu | sweetfish |
| 鮫 | さめ | same | shark |
| 鯉 | こい | koi | carp |
| 鯨 | くじら | kujira | whale |
All of these Kanji are a little difficult as we don’t learn them at elementary schools. In other words, you might impress Japanese people if you know them 😉