Hypoplectrus puella
Barred hamlet, a widespread synchronous hermaphrodite of Caribbean reefs.
Hypoplectrus puella, commonly known as the barred hamlet, is a species of marine ray-finned fish belonging to the subfamily Serraninae within the family Serranidae, which also includes groupers and anthias. It is native to the Western Central Atlantic and occasionally enters the aquarium trade. Notable for being the most numerous and widespread species in the genus Hypoplectrus, it is a synchronous hermaphrodite with a distinctive barred color pattern.
Quick Facts
- Taxon
- Hypoplectrus puella
Facts from the source article.
Lore & Background
Hypoplectrus puella was first formally described in 1828 by French anatomist and naturalist Georges Cuvier, who named it Plectropoma puella based on a type collected at Martinique. In 2012, two new species of 'barred hamlet' were described: Hypoplectrus ecosur from the Yucatan and H. floridae from the eastern Gulf of Mexico. The species has a deep, laterally compressed body with a straight forehead, short snout, and protrusible upper jaw. Its preoperculum is angular with serrations and small forward-pointing spines on the lower margin. The continuous dorsal fin has ten spines and 14–17 soft rays, and the pelvic fins are long, extending to or beyond the anus. The caudal fin is slightly forked. Coloration is pale yellowish to tan with up to seven dark brown vertical bars that vary in number, darkness, and length. Predominant colors are browns and yellow, though some individuals show blue hues. The large pelvic fins range from yellow to dark bluish brown, and thin iridescent blue lines may appear on the head, rarely on the body.
Reader's Guide
Hypoplectrus puella is the most numerous and widespread species in its genus, ranging from Bermuda south to the Florida Keys and the Bahamas, into the Gulf of Mexico, and throughout the Caribbean Sea. It is a solitary species found over rocky or coral reefs near hiding places, and unlike other hamlet species, it may occur in turbid water. It inhabits depths between 3 and 90 meters. As a synchronous hermaphrodite, it can switch between male and female roles during spawning. Juveniles are found in seagrass beds. In Panama, individuals have been observed following feeding schools of striped parrotfish (Scarus iseri), taking advantage of the disturbance caused by the parrotfish to prey species. Those associating with parrotfish schools are much more successful at catching prey than solitary hunters. It has been proposed that the hamlet mimics some parrotfish species in color, though body shapes differ. This carnivore feeds on other fishes and non-sessile benthic crustaceans, is crepuscular (feeding mainly at dusk), and shelters in caves or crevices during the day. The species is found in the aquarium trade and is bred in commercial facilities.
Did You Know?
- Hypoplectrus puella was first described in 1828 by Georges Cuvier as Plectropoma puella.
- It is a synchronous hermaphrodite, able to switch between male and female roles during spawning.
- In Panama, it follows schools of striped parrotfish to improve its hunting success.
Frequently Asked Questions
Who is Hypoplectrus puella?
The barred hamlet is a small marine ray-finned fish placed in the subfamily Serraninae of the grouper-and-anthias family Serranidae. Georges Cuvier gave it its first formal scientific name in 1828 as Plectropoma puella, designating Martinique as the type locality.
What is Hypoplectrus puella's role on Caribbean reefs?
As a synchronous hermaphrodite, every individual can shift between male and female functions, adding reproductive flexibility to the reef community. Its bold barred coloration lets it stay camouflaged among reef structures from shallow water down to roughly 90 metres.
How big does Hypoplectrus puella get?
It reaches a maximum total length of about 14.2 centimetres (5.6 inches), making it a notably small serranid. Its dorsal fin carries 10 spines followed by 14 to 17 soft rays.
Where can fans spot Hypoplectrus puella in the wild?
Its native range is the Western Central Atlantic, where it is the most numerous and geographically widespread species in the entire Hypoplectrus genus. It also occasionally appears in the marine aquarium trade for hobbyists seeking a Caribbean reef species.
Why is Hypoplectrus puella important to the genus Hypoplectrus?
Holding the title of the most abundant and broadly distributed hamlet, it serves as the default reference point when discussing the genus's biology. Its synchronous hermaphroditism and distinctive barred pattern also make it a key model for studying reproductive strategies among Caribbean serranids.
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