. The Australian zoologist. Zoology; Zoology; Zoology. L. C. LLEWELLYN 33 68 LAKE TALBOT 29 3 68 LAKE TALBOT. 10 12 U 16 18 20 22 2U 26 28 30 32 34 36 38 AO kl U Lb 48 50 LENGTH (mm) FIG. 7. Length frequency of fish collected at lake Talbot (3 March 1968 n = 117, 29 March 1968 n = 49). River. The occurrence of C. eyresii throughout the inland of New South Wales has no doubt been overlooked prior to the work of the above authors and the two species of Craterocephalus may well be sympatric throughout their range. DISCUSSION The major characters differentiating the egg of this species from eggs o
. The Australian zoologist. Zoology; Zoology; Zoology. L. C. LLEWELLYN 33 68 LAKE TALBOT 29 3 68 LAKE TALBOT. 10 12 U 16 18 20 22 2U 26 28 30 32 34 36 38 AO kl U Lb 48 50 LENGTH (mm) FIG. 7. Length frequency of fish collected at lake Talbot (3 March 1968 n = 117, 29 March 1968 n = 49). River. The occurrence of C. eyresii throughout the inland of New South Wales has no doubt been overlooked prior to the work of the above authors and the two species of Craterocephalus may well be sympatric throughout their range. DISCUSSION The major characters differentiating the egg of this species from eggs of other freshwater species of fishes from inland New South Wales are its diameter ( approximately mm), the cluster of small oil globules, the heavily pigmented eyes of the larvae at the time of hatching, the covering of adhesive strands on the outside of the egg, and its small perivitelline space. Only two other species of inland fish described to date have similar-sized eggs. These are, Nannoperca aus- ralis australis, the Southern Pigmy Perch, the eggs of which have an average size of mm (Llewellyn 1974), and Galaxias planiceps, the Flat Headed Minnow, which has eggs varying between and in diameter (Llewellyn 1971). In both of these species, the eggs have a larger perivitelline space and do not have a covering of adhesive threads as in C. fluviatilis. The adhesive filaments on the eggs of C. fluviatilis are like many of the Atherinidae (Silversides) (Breder and Rosen 1966). These filaments serve as organs of attachment to submerged objects. In this character, the eggs of this 286 Aust. Zool. 20(2), 1979. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Royal Zoological Society of New South Wales; Royal Zoological Society of New South Wales. Proceedings. [Sydney, Royal Zoological Soci
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