Tetraodontidae: H II A1

Unknown

Egg diameter in µm	Number of oil globules	Diameter of oil globule in µm	Yolk texture	Perivitelline space	Position of oil globule at hatch	Gut length   at eye- pigment stage	Myomeres
1200-1345	0	n/a	clear	narrow	n/a	46% of NL	<20

Egg: On the rare occasions that this egg was seen, the embryo was well developed, and the embryo and yolk were covered with yellow pigment dots (A), underlaid by black pigment which can be seen on a white background. Incubation is at least 48 hours.

Larva: The early larva has a pointed “snout”, which is a forward extension of the dorsal finfold (B). The unpigmented head and eyes can be seen imbedded within this, above the yolk (B). The yellow pigment on the finfold edge in the tail, coalesces into two blotches (D & E). B: NH, C: 1 day, D: 3 days, E: 4 days (24°C).

One hatched larva from a Park Rynie egg, and 1 from DHM, have been sequenced, indicating 2 species, but no match has been found, with adult material currently in BOLD (Reference).

At Park Rynie, this egg was only seen three times, in early to midsummer (blue graph). It was also seen three times in the DHM samples, matching the offshore sightings (green graph).