Hydrophlox chrosomus @OliverKnott_aquascaper
Hydrophlox chrosomus  @OliverKnott_aquascaper
Uploaded May 2026 | Updated September 2026, 1 week ago
✨ Rainbow Shiner – now Hydrophlox chrosomus ✨ available next week at Aquarium-Dietzenbach
(Wholesale/Europe-wide)

This stunning North American shiner was long known in the aquarium hobby as Notropis chrosomus, but recent phylogenetic work has moved it into the genus Hydrophlox — a name meaning roughly “water flame,” perfectly matching the glowing colours of breeding males.

In nature, Rainbow Shiners come from clear, oxygen-rich streams in the southeastern USA. In the aquarium they are peaceful, active shoaling fish that do best in groups, with cool, well-filtered water, good current, open swimming space, and a gravelly setup. Their colours can shift from subtle silver-pink tones to intense blue, purple, and red during breeding conditions.

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Oliver Knott |

Hydrophlox chrosomus

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