8 



FISHES OF AUSTRALIA. 



fishes with long tails usually possessing long anal fins. 

 Comparatively speaking, this fin is not subject to a great 

 deal of variation. In the Mackerels and some other fishes, 

 the anal fin is succeeded by a number of small finlets 



Fig. 3. CAUDAL FINS OF AUSTRALIAN FISHES. 



1. Red Rock-Cod. 



2. Black Rock-Cod. 



3. Blue Groper. 



4. Flounder. 



5. Keardie (Ling). 



6. Nannygai. 



7. Estuary Perch. 



8. Goat-Fish. 



9. Giant Boar-Fish. 



10. Horse- Mackerel. 



11. Kumu Gurnard. 



12. Black Sole. 



corresponding to those on the dorsal surface, already 

 mentioned. In number, these finlets, both dorsal and 

 anal, may reach as high as nine or ten, though more 

 commonly the number is from five to seven. 



