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Updated: May 10, 2025
Towards the back it is of a bluish ash colour, with a slight tint of olive-green; the intermediate spaces being of pearly white, while the gill-coverts are tinged with red. So sharp are its triangular teeth, arranged like those of the shark, that neither twine, copper, nor steel can withstand them.
In this curious cavity of the father's head the young fish are found in all stages of development, the more advanced, a quarter of an inch long, and able to swim about, full of life and activity. These appear to exist outside the gills, within the cavity formed by the gill-coverts and the wide branchiostigal membrane. The eggs remain in the back part of the gills.
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