What the devil……?

Every venture into our amazing marine world provides me with an opportunity to learn something new and to interact one-on-one with some wonderful creatures.

During one dive in Port Phillip Bay, located in Victoria, Australia, the Southern Blue Devil’s iridescent blue colours immediately caught my eye.  Scientifically known as Paraplesiops meleagris, this beautiful fish is endemic to southern Australia. The Southern Blue Devil can only be found in the beautiful waters between Perth in Western Australia to Port Phillip Bay in Victoria to a depth of up to 45m.

The Southern Blue Devil loves to live under ledges and in crevices and caves. They are fiercely protective of their territory, especially during breeding season. My first encounter with the Southern Blue Devil was during breeding season. The male of this species can be a little aggressive if you get too close to their territory, especially if you have any blue colours on your SCUBA kit or wetsuit. My SCUBA mask at the time was made of clear perspex and rubber lined with bright blue rims around the eyes. Thinking I was a competitor for it’s territory, this male Southern Blue Devil told my SCUBA mask in no uncertain terms that it wasn’t welcome.

Southern Blue Devil 1: Dalton Koss HQ SCUBA mask 0.

The Southern Blue Devil on the defensive mode due to my blue rimmed SCUBA mask coming across as a potential competitor.
The Southern Blue Devil on the defensive due to my blue rimmed SCUBA mask appearing to be a potential competitor.

Although quite a visually funny story, here are some other interesting facts about the Southern Blue Devil.

Fact 1. Similar to human finger prints, adult Southern Blue Devils can be individually identified and monitored due to their unique pattern of markings on the lower part of their gill cover.

Fact 2: Adult pairs will stay together during the breeding season, protecting their eggs that are usually laid on rock surfaces in narrow crevices.

Fact 3: The Southern Blue Devil is protected by law across Australia as they are endemic, that is, they are not found anywhere else in the world.

Fact 4: Known to be curious, the Southern Blue Devil will usually interact with SCUBA divers even during non-breeding season.

Fact 5: The Southern Blue Devil loves to eat small crustaceans, snails, worms and sometimes other small fishes.

If you ever have an opportunity to SCUBA across Australia’s southern oceans, look out for the Southern Blue Devil. In fact, it will probably find you first.

The Southern Blue Devil loves living in and around crevices, ledges and caves.
The Southern Blue Devil loves living in and around crevices, ledges and caves.

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