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A bright blue variant normally referred to as 'electric blue Jack Dempsey' or simply 'EBJD' is of unclear origin but it appears to be an ornamental strain fixed from a natural mutation. Care is as per the natural form although the blue fish tend to remain smaller and some reports suggest them to be less aggressive. R. octofasciata has a confusing taxono...

This species has been a popular aquarium fish for a considerable period and virtually all fish traded are now raised commercially for the purpose. It is easily identified by the characteristic bright red or orange underside of the head, which is more pronounced in adults. Following Miller and Taylor (1984), the genus Thorichthys is identified...