Pomacanthus Rhomboides
The old woman angelfish (''Pomacanthus rhomboides'') is a species of marine ray-finned fish, a marine angelfish belonging to the family Pomacanthidae. It is found in the western Indian Ocean. Description The old woman angelfish, as an adult it is possibly the least colourful of the genus Pomacanthus. The adults are bronze brown on the anterior two thirds of their bodies with the posterior third being pale bluish grey. The juveniles resemble the juveniles of other species in the genus and are, therefore, more colourful than the adults. They are mainly black with thin, want blue and white lines. The dorsal fin contains 11-13 spines and 22-25 soft rays while the anal fin contains 3 spines and 21-23 soft rays. This species attains a maximum total length of . Distribution The old woman angelfish is found in the western Indian Ocean. It is found from Maputo Bay in Mozambique southwards along the coast of South Africa as far as Knysna in the Western Cape. Habitat and biology The old ...
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John Dow Fisher Gilchrist
John Dow Fisher Gilchrist (1866–1926) was a Scottish ichthyologist, who established ichthyology as a scientific discipline in South Africa. He was instrumental in the development of marine biology in South Africa and of a scientifically based local fishing industry. Education and career Gilchrist was born in Anstruther, Fife, Scotland in 1866. His early education was at Madras College, St Andrews, Scotland. He studied at the University of St Andrews and the University of Edinburgh, graduating with a Bachelor of Science (BSc) and a Master of Arts (MA). He was awarded an 1851 Exhibition scholarship for advanced studies and research, which enabled him to study feeding in marine fishes. After further studies at the University of Munich and the University of Zurich he obtained his PhD in geology at Jena University in 1894. He studied marine biology in Naples, Monaco and the Isle of Man before returning to teach zoology at the University of Edinburgh. During his three months at Nap ...
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