Introducing the eastern highfin spurdog (also referred to as the 'green eye dogfish' to some people)! If you're a shark scientist, you may know them as Squalus albifrons. Remember when we talked about the western highfin spurdog? Yeah, relatives.
The eastern highfin spurdog is a medium-size dogfish that has a short, round snout and an equally short head. They are a pale grey color on top that gives way to a creamy underbelly. Their caudal fit, sort of like the rest of it, is short. But, it lacks a dark bar through the bottom lobe. This is one easy way to ID this specimen!
They are endemic to Australian subtropical waters, found at depths between 220 and 510 metres deep. So although we know little about this shark, at least there are minimal fisheries in this area, although any future deep sea trawl fisheries could be a threat to their population. We know not much about it's biology, but one can assume it is like other deepwater shark species in that they take a long time to reach sexual maturity, produce few offspring, etc. The maximum length of a specimen measured is 65 cm (26 in) and they are a viviparous (aplacental) species. Little else is known about this species, so they are assessed by the IUCN as "Data Deficient" (DD).
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TFUI Founder Melissa C. Marquez is author of all animal bios and "Behind the Fins" segments.
SEE MELISSA'S TEDx TALK HERE:
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