鯰髭[namazuhige] drooping moustache
瓢箪鯰[hyoutannamazu] (person) slippery as an eel
鯰号[namazugou] earthquake simulator
電気鯰[denkinamazu] electric catfish (any species of family Malapteruridae, esp. species Malapterurus electricus)

痺れ鯰[shibirenamazu] electric catfish (any species of family Malapteruridae, esp. species Malapterurus electricus)
逆さ鯰[sakasanamazu] upside-down catfish (Synodontis nigriventris)
琵琶湖大鯰[biwakooonamazu] Lake Biwa catfish (Silurus biwaensis)
ヨーロッパ大鯰[yooroppaoonamazu] Wels catfish (Silurus glanis)