In Australia, it's illegal to catch highly protected species like Grey Nurse Sharks, Seahorses, Seadragons, Queensland Groper, Ballina Angelfish, and freshwater giants like Murray Cod (in some areas/sizes), plus invasive pests like Carp, Tilapia, and Mosquito Fish (which must be destroyed). Rules vary by state (NSW, VIC, QLD, NT, WA), covering species protection, size limits (e.g., giant cod), bag limits, and invasive species management, so always check local regulations.
Examples of commercially protected fish include:
Tilapia were introduced into Australia in the 1970s as ornamental fish and are now a major threat to Australia's native biodiversity. Females carry their eggs and small fry in their mouths, and these can survive for a long time after the adult dies.
"In Victoria, noxious aquatic species include koi carp alongside other well-known freshwater fish such as common carp, mosquito fish, oriental weather loach, tilapia and cichlids. "These are all invasive species that potentially threaten wild ecosystems by outcompeting native fish and destroying natural habitat.
Atlantic flatfish (Atlantic halibut, flounder and sole)
Due to historical overfishing and high contamination levels, these flatfish species have secured their slot on the list of fish you should never eat.
as unclean (Leviticus 11:27). He tells us that salt and freshwater fish with fins and scales may be eaten (Leviticus 11:9–12), but water creatures without those characteristics (catfish, lobsters, crabs, shrimp, mussels, clams, oysters, squid, octopi, etc.) should not be eaten.
The unhealthiest fish to eat are typically large, predatory species high in mercury like shark, swordfish, king mackerel, and imported tilefish, plus bluefin tuna, which are dangerous for brain/nerve health, especially for pregnant women and children; also, farmed salmon and some imported tilapia/catfish raise concerns for contaminants and antibiotics, while orange roughy and Atlantic cod are often cited for high mercury and overfishing/sustainability issues.
Fish worth a million dollars are typically rare, high-quality bluefin tuna sold at Japan's New Year auctions for prestige and good fortune, or exceptionally rare Japanese koi bred for unique colors and patterns, with recent sales reaching over $3 million for tuna and $1.8 million for koi. These prices reflect cultural value, culinary demand, and the fish's status as a collector's item rather than just food.
The Fisheries Act 1902 (NSW) ( DOC0358 ) recognised Aboriginal fishing by exempting Aboriginal people from certain regulations. It expressly permitted Aboriginal people to take undersized oysters from public oyster reserves, as well as undersized fish, provided they were mature enough and for personal consumption.
Real-time fishing vessel information is available from Automatic Identification System (AIS), a global vessel-tracking system that provides real-time movement and location of ships in harbors and ports (Cheng et al., 2023). The AIS data is gathered by satellites and terrestrial receivers.
The healthiest fish in Australia are oily fish rich in omega-3s and low in mercury, like salmon, sardines, mackerel, herring, and canned salmon/sardines, alongside white fish such as barramundi, snapper, and flathead, which offer protein and nutrients; prioritize grilling, baking, or steaming for healthy preparation.
Australia's two worst invasive species, based on impact on threatened species, are European Rabbits (most destructive) and the plant pathogen Phytophthora (root rot fungus), with Feral Cats and Feral Pigs also being major threats, impacting hundreds of native plants and animals and costing billions in damage. Rabbits destroy vegetation and boost predators, Phytophthora kills plants by attacking roots, while feral cats and pigs directly kill native wildlife and degrade ecosystems.
Tilapia, on the other hand, has a slightly firmer texture than Pangasius but is still considered less meaty and rich than Barramundi. Tilapia is valued for its mild taste and wide availability, but its flavor profile is generally less pronounced compared to Barramundi.
The Top 15 Hardest Fish to Catch
The Red Handfish (Thymichthys politus) is one of the rarest fish on Earth. Unlike most fish, it "walks" across the seafloor using modified pectoral fins resembling tiny hands. Found only in shallow waters off Tasmania, Australia, it crawls slowly along sandy seabeds and seaweed patches.
Contact your nearest fish and game agency or the U.S. Fish and Wildlife Service (703-358-2148) as soon as possible. Keeping data on the size, number, and location of where snakeheads are caught or seen is vital to controlling this invasive fish.
A 30cm bream, particularly species like black bream, is typically around 8 to 10 years old, as they are slow-growing fish that often reach this legal minimum size after nearly a decade, with some studies suggesting it takes about 9 years to reach 28cm. Older, larger bream can be significantly older, with fish over 40cm sometimes being 14 to 18 years old or even older.
Recreational Fishing Licence Fee – exemption
Fishers who are Aboriginal persons are exempt from paying a recreational fishing fee. Removing barriers to accessing the resource is in keeping with recognition under the Act of the spiritual social and customary significance of fishing to Aboriginal people.
The standard three-part test for Aboriginality in Australia requires a person to meet three criteria: descent (biological ancestry), self-identification (identifying as Aboriginal or Torres Strait Islander), and community acceptance (being recognized as such by their Indigenous community). This definition, adopted by the Commonwealth government, is used for many government programs and services, although the Australian Bureau of Statistics (ABS) uses a simpler two-part test (descent and self-identification) for general data collection.
The #1 rarest fish is often considered the Devil's Hole Pupfish (Cyprinodon diabolis) due to its incredibly small habitat in a single Nevada cavern, though some sources cite the Red Handfish as rarer, with only around 100 individuals left in Tasmania; both face critical endangerment, but the Pupfish lives in the smallest known home for any vertebrate.
Koi are beautiful and long-lived fish, living up to and past 100 years in optimal conditions. In domestic ponds, they typically live around 15 to 30 years. Japanese koi often live 40 years or longer. The oldest koi fish on record was around 200 years old! Contact us today about maintaining your backyard fish pond.
The 276-kilogram tuna was caught off the coast of Oma in the northeastern prefecture of Aomori Japan…
If you've come across one of the many 'stinky fish challenge' videos on YouTube, it's most likely the Swedish fermented fish 'surströmming' you've watched people (trying to) eat. Surströmming is a traditional dish from northern Sweden that arose during the 16th century when Sweden had a salt shortage.
as unclean (verse 27). He tells us that salt- and freshwater fish with fins and scales may be eaten (verses 9-12), but water creatures without those characteristics (catfish, lobsters, oysters, shrimp, crabs, clams, mussels, squid, frogs, octopi, etc.) should not be eaten.
The Dietary Guidelines for Americans states that to consume those higher amounts, children should only be fed fish from the “Best Choices” list that are even lower in mercury – these fish are anchovies, Atlantic mackerel, catfish, clams, crab, crawfish, flounder, haddock, mullet, oysters, plaice, pollock, salmon, ...