GOBIES
GOBIIDAE
Masked/ Glass Goby
Coryphopterus  personatus/  hyalinus *
    Ecological Descriptors
Habitat Size (cm) Diet Behaviour Sex 
Co 2-4 Pla Sh PGH
 
 
Description:
Bright orange to translucent with
small white rectangles along flank. Dark mask between eyes and snout Males have a longer second dorsal spine. Generally Masked Goby is larger, stouter and with pale orange body, whilst the Glass is bright orange and slender, but the 2 cannont be reliably be distinguished visually.
The latest provisional expert opinion is that the Glass  has a prominent thin black stripe midlaterally on rear body and "peppery" speckles on the rear body, with the scales outlined with fine black lines (subject to revision as comparisons between specimens for DNA analysis and visual differentiators continues).


Ecology
In aggregations hovering over the substrate from 3-25m. Feeds on plankton.

Life Cycle:
Sequential protogynous hermaphrodites, with sex reversal is completed in nine days. Females outnumber males at approximately four to one. Male and female size distributions show considerable overlap, but may differ, and there occur small males which are smaller than mature females.
Masked/ Glass Goby
* Currently these 2 highly similar species not differentiated here
300
(C) Joel De Marino
Masked/ Glass Goby