Zeiform Mouthbrooding in the Deepsea – Dispelling a Myth

Ralf Britz; G. David Johnson; Kevin Conway

doi:10.20944/preprints202004.0132.v1

Preprint Short Note Version 1 Preserved in Portico This version is not peer-reviewed

Version 1 : Received: 2 April 2020 / Approved: 8 April 2020 / Online: 8 April 2020 (12:57:36 CEST)

Mouthbrooding or oral incubation, the retention of early developmental stages inside of the mouth for an extended period of time, has evolved multiple times in bony fishes1,2. Though uncommon, this form of parental care has been documented and well-studied in several groups of freshwater fishes but is also known to occur in a small number of marine fishes, all inhabiting coastal waters1,2. A recent paper3, reported for the first time mouthbrooding in a deep-water fish species, the zeiform Parazen pacificus, which according to the authors “fills in a gap in the larval literature for this family of fishes and prompts further investigation into other novel reproductive modes of deep-sea fauna.”

Mouthbrooding; deep water fish; Zeiforms; Parazen

Biology and Life Sciences, Animal Science, Veterinary Science and Zoology

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Zeiform Mouthbrooding in the Deepsea – Dispelling a Myth

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