Thalassophryne
Thalassophryne is a genus of toadfishes found in the western Atlantic Ocean with one species ("T. amazonica") found in the Amazon River and some of its tributaries. Species. There are currently six recognized species in this genus: Venom. Members of the genus "Thalassophyne" are venomous. Venom is delivered through two hollow spines on the dorsal fin and two spines on pre-opercular regions, a venomous gland is located at the base of the spines and can be erected or depressed by the fish.