Above: Labidochromis sp. “perlmutt,” a male photographed by Georg Mittenecker; photo used with his generous permission. To the best of my knowledge, this popular and colorful species of Labidochromis is still scientifically undescribed and so lacks a proper scientific name. “Perlmutt” (one word) is German for “mother-of-pearl” — the fish has nothing to do with mongrel dogs, contrary to those aquarists who think it is a “pearl mutt”! In the aquarium trade, this beautiful fish has also been called Labidochromis “yellow bar” and the “pearl of Tanzania.” In the wild, it reaches a total length of 7.6-8.9 cm