For this week’s Fish of the Week, we’re moving from the usual fish territories of South America and the Asian continent, and venturing to the island of Papua New Guinea, the home of the neon dwarf rainbow fish. This fish may be small in size compared to its larger cousins, rarely growing larger than 5 cm (2 inches), but has the colour and charisma to make this fish an aquarium must. The flanks of both sexes is a light shade of blue, but depending on how they catch the light, reflects the entire spectrum of colours due to their iridescence. The sexes are easily distinguishable; males possess red fins whereas females have yellow fins. They’re active, generally peaceful, plant-friendly and readily available, so there’s no reason not to consider them in your aquarium.
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