1) Family squalidae 2) Fish family 
Squalidae, also called dogfish sharks or sometimes spiny dogfishes, are a family of sharks in the order Squaliformes. They have two dorsal fins, each with smooth spines, but no anal fin and their skin is generally rough to the touch. Unlike virtually all other shark species, dogfish sharks possess venom which coats their dorsal spines – this ven...
[n] - dogfishes having a spine in each dorsal fin
family Squalidae noun dogfishes having a spine in each dorsal fin