India and Tübingen, two outbred wild-type strains, were utilised to create genetically homogenous zebrafish strains. The India strain was collected to Darjeeling.

(IND)India-Stock obtained from expedition to Darjeeling (wild isolate). Or (DAR) Darjeeling-Wild-type line collected in Darjeeling, India by Heiko Bleher in 1987. Line maintained by inbreeding. A wild-type zebrafish line whose material was obtained in 1987 in Darjeeling, India. This line has survived through inbreeding. Because of the existence of many polymorphic markers, it is utilised for gene mapping

(SJd)  Sibling line to Darjeeling. Inbred to reduce polymorphisms.

SJD is derived from a complete sibship (clutch) of Darjeeling Wild Types genotyped by the Johnson lab. According to the findings, roughly 14% of the genome still included polymorphisms in the stock. Since then, the Johnson lab has been breeding these fish in order to maintain their diversity and vitality.

SJD-subB: The Johnson lab also created SJD-subB, a subline of SJD that has been further inbred by complete sib matings. They have not been tested to see if they are more inbred, although they most certainly are. The Johnson lab believes that just 5% of the DNA in these fish is still polymorphic.

WIK (Wild-type India Kalcutta)

The WIK line is very polymorphic relative to the TU line and was first described as WIK11