Identification Resources

Key to the Genera of the Gigantactinidae

Females

1A. Teeth of lower jaw well developed, in several rows; dorsal-fin rays 5-9, rarely 4 or 10; anal-fin rays 4-7, rarely 8; escal bulb present (Gigantactis Brauer, 1902)

1B. Lower jaw teeth absent; dorsal-fin rays 3-4, rarely 5; anal-fin rays 3-4; escal bulb absent (Rhynchactis Regan, 1925)

Males

1A. Upper denticular teeth 3, lower denticular teeth 4; dorsal-fin rays 5-9, rarely 4 or 10; anal-fin rays 4-7, rarely 8; skin spinulose in some species (Gigantactis Brauer, 1902)

1B. Upper denticular teeth 4, lower denticular teeth 6; dorsal-fin rays 3-4, rarely 5; anal-fin rays 3-4; skin naked (Rhynchactis Regan, 1925)

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