Category Archive: genetics

Dec 05

Fancy guppy, platy, molly and swordtail pedigree types

Fancy guppies, platies, mollies and swordtails All the four popular livebearers available in your local shop are pedigree varieties or cross breeds. You will not find wild type (fish found in the wild or resemble fish from the wild) livebearers for sale. These fancy livebearer fish have been developed over many years of selective breeding. …

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Nov 16

Fish coloration

Coloration in fish How do fish colours come about? Fish coloration is formed by the reflection and absorption of various parts of the spectrum of light inside specialised cells. This is achieved by various layers of colour forming cells, such as crystals in the skin(iridophores), pigment cells(Chromatophores) and underlying flesh colours. Pigment cells are of …

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Nov 09

Fish anatomy

Anatomy of fish The shape of a fish’s body tells you a lot about its behaviour in the wild. Long stream-lined fish are usually lake or river fish. Being streamlined helps a fish to swim faster in rapid moving waters or open bodies of water such as a large lake. Short or stocky fish are …

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Mar 19

A guide to keeping and breeding fancy goldfish

A guide to keeping and breeding fancy goldfish Goldfish are one of the perennial favorites of the aquarium trade. It is difficult to imagine a fish more evidently associated with fish keeping than the goldfish. While everyone is familiar with the traditional appearance of the common goldfish, the various varieties known as fancy goldfish offer …

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Mar 01

Selective breeding and wild caught fish

A guide to selective breeding and wild-caught fish While you may have already enjoyed some success breeding some species of fish, there is an additional level of skill necessary to ensure that the specimens you breed are of the highest quality. In order to maximise the health of your fish, you must be aware of …

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Nov 13

Why the Zebrafish will Never Die of a Broken Heart

Dr Jana Koth works at the Weatherall Institute of Molecular Medicine, based at the John Radcliffe Hospital, studying how the tiny Himalayan freshwater zebrafish repairs its heart after damage.   More than 6,700 people in Oxfordshire were affected by heart failure in 2011/12.   By looking at the way the zebrafish’s heart repairs itself after …

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