Leiognathus nuchalis

In this study, we have studied light emission from fish and their behaviour and have focused on Leiognathus nuchalis. 

EXPULSION OF SYMBIOTIC LUMINOUS BACTERIA FROM PONY FISH, LEIOGNATHUS NUCHALIS... 

In contrast to the bacterial-squid story, little is known about the horizontal transfer of luminous symbionts in bacteria-fish symbioses. Recently, however, we successfully raised Leiognathus nuchalis, pony fish juveniles, and infected them with symbiotic Photobacterium leiognathi. Juvenile L nuchalis raised separately from adults are apo-symbiotic and therefore not luminous. When the juveniles were kept with adults, a significant number became infected and luminescent. These results strongly support, the horizontal transfer of expelled P. leiognathi. 

Wada M, Azuma N, Mizuno N, Kurokura H. Transfer of symbiotic luminous bacteria from parental Leiognathus nuchalis to their offspring. Mar Biol 1999 135 683-87. 

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