ResearchGate
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In 2020, two new wrasses were discovered in Australia, Pseudojuloides crux Tea, Gill & Senou 2020 and Pseudojuloides paradiseus Tea, Gill & Senou 2020, the initial description of both wrasses also includes a revision redescription of the wrasse Pseudojuloides elongatus Ayling & Russell, 1977.
Males of Pseudojuloides crux are greenish-yellow to yellowish-orange with a black-covered upper surface and 3 - 5 rows of metallic blue spots.
Females are olive in color overall.
Pseudojuloides crux is found only on the west coast of Australia, from the Houtman Abrolhos southwest to north to the Dampier Archipelago, where the species inhabits rubble areas with distinct kelp and other macroalgae growth.
This wrasse species is a protogynous hermaphrodite, where females can change sex during their life cycle to become males.
Pseudojuloides crux is usually observed in groups with one dominant male and several females.
Etymology:
The specific name "crux" refers to the most famous constellation in the southern celestial hemisphere, the Crux or Southern Cross constellation, in reference to the southern distribution of this species and the dark upper body with numerous spots in males, reminiscent of a starry night.
Pseudojuloides crux belongs to the Pseudojuloides elongatus complex.
Scientific reference:
Two New Species of Pseudojuloides from Western Australia and Southern Japan, with a Redescription of Pseudojuloides elongatus (Teleostei: Labridae)
ResearchGate
DOI:10.1643/CI-19-316
Yi-Kai Tea, Anthony Gill, Hiroshi Senou
Jumping guard
A jumping guard prevents (nocturnal) fish from jumping out.
Wrasses, blennies, hawkfishs and gobies jump out of an unprotected tank in fright if their night rest is disturbed, unfortunately these jumpers are found dried up in the morning on carpets, glass edges or later behind the tank.
https://www.korallenriff.de/en/article/1925_5_Jump_Protection_Solutions_for_Fish_in_the_Aquarium__5_Net_Covers.html
A small night light also helps, as it provides the fish with a means of orientation in the dark!
Males of Pseudojuloides crux are greenish-yellow to yellowish-orange with a black-covered upper surface and 3 - 5 rows of metallic blue spots.
Females are olive in color overall.
Pseudojuloides crux is found only on the west coast of Australia, from the Houtman Abrolhos southwest to north to the Dampier Archipelago, where the species inhabits rubble areas with distinct kelp and other macroalgae growth.
This wrasse species is a protogynous hermaphrodite, where females can change sex during their life cycle to become males.
Pseudojuloides crux is usually observed in groups with one dominant male and several females.
Etymology:
The specific name "crux" refers to the most famous constellation in the southern celestial hemisphere, the Crux or Southern Cross constellation, in reference to the southern distribution of this species and the dark upper body with numerous spots in males, reminiscent of a starry night.
Pseudojuloides crux belongs to the Pseudojuloides elongatus complex.
Scientific reference:
Two New Species of Pseudojuloides from Western Australia and Southern Japan, with a Redescription of Pseudojuloides elongatus (Teleostei: Labridae)
ResearchGate
DOI:10.1643/CI-19-316
Yi-Kai Tea, Anthony Gill, Hiroshi Senou
Jumping guard
A jumping guard prevents (nocturnal) fish from jumping out.
Wrasses, blennies, hawkfishs and gobies jump out of an unprotected tank in fright if their night rest is disturbed, unfortunately these jumpers are found dried up in the morning on carpets, glass edges or later behind the tank.
https://www.korallenriff.de/en/article/1925_5_Jump_Protection_Solutions_for_Fish_in_the_Aquarium__5_Net_Covers.html
A small night light also helps, as it provides the fish with a means of orientation in the dark!
