The hatchery is one of the largest breeders of barramundi fingerlings in Queensland and their mangrove jack breeding program has resulted in Lake Awoonga holding the largest stocks in Australia with more than 50,000 released. Other fish species include Agassiz's glass perch, banded grunter, barramundi, bony bream, eastern rainbowfish, eeltail catfish, fly-specked hardyhead, forktail catfish, gudgeon, long-finned eel, longtom, mouth almighty, sea mullet, snub-nose garfish and spangled perch. Also present in low numbers are Hyrtl's tandan, mangrove jack, saratoga, silver perch, sleepy cod, sooty grunter, and yellowbelly. Since 1996, over 2.5 million barramundi fingerlings and 470,000 mullet fingerlings have been released into the lake. Barramundi in the 10–25 kg range are regularly caught from the lake.