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Image number: 2405134

Zebrafish (Danio rerio). Stripe form (above) Casper fish form (bellow). Casper fish are the result of a cross between 2 mutant zebra fish. Since 1930 zebra fish are used to study the development of cancer in vivo. The fertilized eggs, embryos, and fry are transparent, allowing scientists to easily observe and study topics such as tumor growth, brain tissue development, and blood vessel growth. However, after a few weeks, transparency declines as their bodies become opaque, limiting the research window for scientists. In response, researchers began crossbreeding specific genetic strains of zebra fish to produce a transparent fish. After a year, they developed the "Casper Fish", which lacks pigment in its skin and scales, and therefore is transparent. The Casper Fish’s transparency allowed researchers to extend their research into the adult stage of this model organism. USA

© Paulo de Oliveira / Biosphoto

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Keywords

Domestic animal / Domestic fish / Aquarium fish / Freshwater aquarium fish

Wild animal / Fish (animal) / Osteichthyes / Actinopterygii / Cyprinid / Danio / Zebra danio (Danio rerio)

Natural resources use / Fauna use / Captive animal / Aquarium / Freshwater aquarium

Species / Species particularity / Fishes particularity / Freshwater fish / Tropical freshwater fish

Natural resources use / Agronomy / Plant use / Aquarium plant

Species / IUCN Red List of Threatened Species / Low Risk (IUCN) LR / Least Concern (IUCN) LC

Mutation

Colour / Transparent

Enumeration / Pair

Organism / Morphology / Physical morphology / Lined

Area / Naturalness / Natural area

Shot / Underwater shot

Shot / Overview

Shot / Profile shot

Motion / Locomotion / Swim

Individual / Stage of development / Adult

Health / Medical research

Health / Care / Therapy

Health / Disease / Cancer

Latin keywords

Eukaryota / Opisthokonta / Metazoa / Bilateria / Coelomata / Deuterostomia / Chordata / Vertebrata / Pisces / Osteichthya / Actinopterygii / Teleostei / Cypriniformes / Cyprinidae / Danio

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