Fish Tank Size Requirement (How big is enough for an aquarium)
I wouldn’t put Goldfish or pleco in the top 10. There are far more other fish that grow to big for the biggest aquariums.
If you've not realized yet, we love BIG fish tanks. They're spacious, fish love them and you can fit loads of in them. The 4 tank listed above are only a small taste of what we have. If you're looking for a big aquarium, look no further than our , where you'll find some seriously spacious tanks in a variety of shapes and sizes. If that sounds a bit too large for your needs, how about a It'll still be big enough for most. These tanks are also big enough to include if you're breeding fish or keeping 2 different species together. If you're needing something much larger, then we also have a page dedicated to Be warned, they are seriously big!
The Tennessee Aquarium's new exhibit, "River Giants," is an extreme makeover of a major exhibit. This video time lapse captures one month's worth of construction work in 2.5 minutes. Converting a saltwater tank to freshwater has been a big project. It has taken more than two years to go from drawing board to opening. This tank holds nearly 90,000 gallons of water and takes almost five hours to fill completely. In this video, you see the tank filling with freshwater for the first time since the Aquarium opened in 1992. This first fill was performed to test for leaks. It takes another two hours to drain this tank. The exhibit was filled and drained three times before the final fill before the fish were brought in for display. Funding for this project was provided, in part, by the Institute of Museum and Library Services.
Large Aquarium Fish for the New Aquarist | PetHelpful
Goldfish are arguably the most commonly kept aquarium fish worldwide
This catfish gets way to big for the majority of home aquariums. You're looking at a tank in the thousands of gallons here. Think large backyard ponds or leave them in the wild or public aquariums.Although they may take a while to settle into their new tank, Cherry Barbs are the perfect freshwater fish for a home aquarium for all of the reasons listed above. They can tolerate big changes in water parameters, they are friendly, they only grow to around 2 inches long and in general, they are an easy fish to take care of. As one of the most endangered species of fish in the wild, the Cherry Barb is still a favourite within the fishkeeping community, thanks to it’s bright, eye catching colours, and it’s entertainment value. They are a very active fish, and once they become accustomed to their new surroundings, they will be very active and fun to watch.Watch more How to Take Care of an Aquarium videos:
When deciding on what shark to get, you want the best shark for your fish take. It first depends if you have a freshwater tank or a saltwater tank. The sharks that you'll find for freshwater tanks are not true sharks. They're not cartilaginous. They're bony fishes. Their fin patterns and their morphology closely resemble saltwater sharks, so for that reason they're called sharks, but they're not true sharks.
Saltwater is where you'd find the real sharks. For freshwater, most of the shark get very, very large. The iridescent sharks, tricolor sharks, they get really, really big, I mean, three to four feet in nature, but they happen to be very hardy. So you can keep them in a small aquarium, maybe 30 to 50 gallons in size. But they're going to quickly outgrow it, and it's cruel to keep a fish that gets three or four feet in nature restricted to a tank that's only three or four feet long. It's just really, really cruel, so I don't recommend a lot of the freshwater fish that are called sharks for home aquariums. If you have to have a freshwater fish that's called a shark, you can get a redtail shark. They don't get as big. The flying foxes kind of look like sharks. They don't get terribly large.
But for saltwater, the sharks that I would recommend are any of the cat sharks, bamboo, banded cats, dog chain. Those sharks stay on the bottom. Even the epaulettes from Australia, those are really cute sharks. They walk around on their pectoral fins. They also get large, so you want to make sure you have a large aquarium, but because they're not pelagic swimmers like black tips and white tips, any of the open swimming sharks, they're more suitable to home aquariums.
If you have to have something that looks like a great white or a baby great white, like a black tip, you're going to need a really large tank, and those tanks are very expensive. I'm talking, people would recommend a 200 to 300 gallon tank. I wouldn't put them in anything less than 1000 gallons. That tank needs to be round in shape. It needs to be eight to ten feet in diameter. They're just not going to fare well in anything smaller. And the upkeep and the maintenance on an aquarium like that is pretty staggering. You really have to know what you're doing. You need to have a lot of money or be really into this hobby to be that dedicated to keep one these open water reef sharks.
So to wrap it up, for saltwater, I would recommend one of the bottom-dwelling cat sharks. Nurse sharks are really good when they're small, but they get really large, so I don't feel that they're suitable for captivity. And then for freshwater, redtail sharks, tri-colors or balas sharks or iridescent sharks are great when they're small. But again, they're going to get really large and you're going to have to get them a much bigger tank, like the 200 to 300 gallon tank to keep them when they're adults.There are plenty of popular ornamental fish species that can grow a lot bigger than many people expect. It’s not just the known ‘tankbusters’ that can get large, there are a few minor tankbusters that can easily outgrow a lot of domestic aquariums. The idea that a fish will ‘grow to the size of the tank’ is widespread, but the size of the tank is not the deciding factor in how large a species may grow. Please see our article on for more details.