Fowlerichthys ocellatus
The largest frogfish in the Western Atlantic, with three eye-like spots.
The ocellated frogfish, *Fowlerichthys ocellatus*, is a ray-finned marine fish from the Antennariidae family, commonly known as frogfishes. Its range covers the Western Atlantic Ocean. This species holds the record as the largest frogfish in the Western Atlantic, with a maximum recorded total length of 38 cm.
In terms of classification, it was originally described as *Lophius histrio ocellatus* by German naturalists Marcus Elieser Bloch and Johann Gottlob Theaenus Schneider, with Havana listed as the type locality. Its closest relative is *F. senegalensis*. According to the 5th edition of *Fishes of the World*, the genus *Fowlerichthys* belongs to the family Antennariidae, within the suborder Antennarioidei of the order Lophiiformes (the anglerfishes).
The genus name *Fowlerichthys* honors American ichthyologist Henry Weed Fowler, who provided the type specimen for the genus’s type species, *F. floridanus*, to Barbour; *ichthys* is Greek for fish. The species name *ocellatus* refers to the two or three eye-like spots, or ocelli, that mark this fish.
The body is globose and somewhat compressed, with eyes set on the sides of the head and a large, upward-pointing mouth filled with many small teeth. The gill openings are small and located behind and below the base of the pectoral fin, which is limb-like with an elbow-like joint and a broad attachment to the body. There are three dorsal spines, and the dorsal fin has 13 soft rays. The first dorsal spine, called the illicium, is about as long as the second and ends in an esca—a cluster of elongated filaments. The second dorsal spine is curved and connected to the head’s skin by a membrane, while the third is movable and not attached to the head’s skin. The anal fin has 8 soft rays, a caudal peduncle is present, and the rear edges of the dorsal and anal fins do not connect to the caudal fin. The skin is densely covered with bifurcated spicules. Coloration varies from orange to mottled yellow-brown, typically featuring three large, conspicuous ocelli: one on the lower middle part of the dorsal fin, one directly below that spot, and another in the middle of the caudal fin. Many small dark spots appear on the lower head and body.
This species inhabits the Western Atlantic from North Carolina southward, through the Gulf of Mexico and the Caribbean, to the northern coasts of Colombia and Venezuela.
Quick Facts
- Taxon
- Fowlerichthys ocellatus
Facts from the source article.
Lore & Background
The ocellated frogfish was first formally described as Lophius histrio ocellatus by the German naturalists Marcus Elieser Bloch and Johann Gottlob Theaenus Schneider, with its type locality given as Havana. It is most closely related to F. senegalensis. The genus name Fowlerichthys honors the American ichthyologist Henry Weed Fowler, and the specific name ocellatus means having ocelli, referring to the two or three eye-like spots on the fish.
The fish has a somewhat compressed, globose body with eyes on the sides of the head and a large upwardly pointing mouth with many small teeth. Its first dorsal spine (the illicium) is topped with an esca consisting of a cluster of elongated filaments. The skin is densely covered with bifurcated spicules. Its color varies from orange to mottled yellow-brown, typically with three large conspicuous ocelli: one on the lower middle part of the dorsal fin, one directly under that spot, and another in the middle of the caudal fin. Many small dark spots appear on the lower head and body.
This species is found on rock and coral reefs at depths between 1 and 150 m, though typically between 20 and 50 m. Its range extends from North Carolina south through the Gulf of Mexico and the Caribbean to the northern coast of South America in Colombia and Venezuela. Ocellated frogfish are piscivorous predators that are sedentary when not hunting. The female's ovaries resemble tightly wound double scrolls, and the eggs are encased in a gelatinous mass that floats.
Reader's Guide
The ocellated frogfish is significant as the largest frogfish in the Western Atlantic, reaching a maximum total length of 38 cm. Its taxonomy places it within the genus Fowlerichthys, which was named in honor of ichthyologist Henry Weed Fowler. The species is distinguished by its three conspicuous ocelli, or eye-like spots, which give it its specific name. Its distribution spans from North Carolina to northern South America, inhabiting rock and coral reefs at depths typically between 20 and 50 m. The fish's biology includes a piscivorous diet, sedentary hunting behavior, and a unique reproductive strategy where eggs are laid in a floating gelatinous mass. The species is classified within the family Antennariidae, suborder Antennarioidei, order Lophiiformes, and is most closely related to F. senegalensis. Its description includes a globose body, limb-like pectoral fins, and a dense covering of bifurcated spicules. The ocellated frogfish's variable coloration and large size make it a notable member of the frogfish family in its region.
Did You Know?
- The ocellated frogfish is the largest frogfish in the Western Atlantic, reaching 38 cm in total length.
- Its specific name ocellatus means 'having ocelli,' referring to its two or three eye-like spots.
- The species was first described as Lophius histrio ocellatus by Bloch and Schneider, with type locality Havana.
Frequently Asked Questions
What is Fowlerichthys ocellatus?
It is the ocellated frogfish, a ray-finned marine fish belonging to the Antennariidae family in the Western Atlantic Ocean. It holds the record as the largest frogfish species in that region.
How big does Fowlerichthys ocellatus get?
It reaches a maximum total length of roughly 38 cm (about 15 in), which makes it the biggest frogfish found in the Western Atlantic.
Where does Fowlerichthys ocellatus live and at what depths?
This species is native to the Western Atlantic and is typically encountered between 20 and 50 meters deep, though its depth range spans from just 1 meter down to 150 meters.
What does Fowlerichthys ocellatus look like?
Its most striking feature is the trio of eye-like spots (ocelli) that give the species its name. It also has three dorsal spines, 13 dorsal soft rays, and 8 anal soft rays.
What is Fowlerichthys ocellatus's closest relative and who first described it?
Its nearest living relative is Fowlerichthys senegalensis. The species was originally named by German naturalists Bloch and Schneider, with Havana recorded as the type locality.
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