"I've followed the bluehead
wrasse for years because sex change is so quick and is triggered by a visual cue.
However, many fish, such as the clownfish from Finding Nemo, the kobudai from Blue Planet II, and the Caribbean bluehead
wrasse, routinely change their sex in adulthood as a natural part of their lifecycle.
In 1972, I saw bigeyefish, damselfish, doctorfish, filefish, goatfish, gobies, hogfish, lemon butterflyfish, lizardfish, parrottfish, porcupinefish, pufferfish, queen angelfish, rock beauties, sergeant majors, soldierfish, spot-tail butterflyfish, Spanish hogfish, squirrelfish, tangs, trunkfish, and bluehead
or yellowhead wrasses.
In a study on the experimental removal of bluehead
wrasse (Thalassoma bifasciatum) aggregations, followed by the introduction of a new population of identical structure (number and sexual ratio), revealed that the previously used sites were not as likely to be chosen by the new population as other potentially identified sites (Warner, 1988).
Fish and Wildlife Service (USFWS), 1990), speckled dace Rhinichthys osculus, flannelmouth sucker Catostomus latipinnis, and bluehead
Status and structure of two populations of the bluehead
sucker (Catostomus discobolus) in the Weber River, Utah.
INVESTIGATION OF STREAM DISTURBANCE ON REPRODUCTIVE LIFE HISTORY TRAITS IN BLUEHEAD
CHUBS, Kaleigh Sims *.
For example, the flannelmouth sucker (Catostomus latipinnis), bluehead
sucker (Catostomus discobolus), and white sucker (Catostomus commersonii) comprised 65-75% of the total catch in the upper Colorado River (Carter and others 1986).
Sexual selection and male characteristics in the bluehead
wrasse, Thalassoma bifasciatum; mating site acquisition, mating site defense, and female choice.
Status of the bluehead
shiner (Notropis hubbsi) in Illinois.
Wrasse Thalassoma bifasciatum and Bicolored Damselfish Stegastes partitus dominated the coral reefs of Honduras, Puerto Rico (Aguilar-Perera & Appeldoorn 2008) and Curacao (Nagelkerken et al.
Introduced into the frigid, bottle-green waters below Glen Canyon Dam for the pleasure of sport fishermen, trout have become a threat to fish native to the Colorado River--humpback chubs, flannelmouth suckers, and bluehead
suckers; they compete for food and prey on the young of these now rare or endangered species.