Why do we tend to overcrowd small tanks? Isn’t it because what we wanted in the first place was a nice big aquarium and fish display?
While many fish start life small enough to be comfortable in a relatively small tank, most will eventually require a larger aquarium. You can use a 10-gallon aquarium while your pet fish are still small, but it's more cost-effective to begin with the tank -- as well as the filters and lights -- that will house the fish for their entire lives. Larger tanks are also easier to maintain, as the volume of water serves to dilute waste.
Myriad variables, such as the species kept, the tank's design and the filtration system, can alter the algebra; but most aquarists strive to provide 1 gallon of space for every 1 inch of fish length in the habitat. For example, a 4-inch-long loach requires about 4 gallons of tank space, while three 2-inch-long guppies require about 6 gallons of space. The simple guideline is not appropriate for all species, though: Some relatively small fish -- especially active species -- require larger accommodations.
Why Do Pet Stores Keep Multiple Goldfish In Small Tanks
What is the best algae eating fish for small tanks
Finding small saltwater fish tank species for a small marine aquarium (nano tanks) is not difficult and they are often easily found in local saltwater reef stores and online. If you have a small saltwater aquarium it is vital to keep it lightly stocked and your water parameters stable. Make sure you research any fish you decide to get before you go to the store. Do not make that impulse buy or you may regret it later.No fish should ever have to live in a space so small. Most flower vases look large enough but they equate to around one gallon of water usually. Even though these fish are small and can be put into “smaller” tanks doesn’t mean a flower vase is going to be enough space. I always advise a 5 gallon minimum.Any fish tank from 10 to 30 gallons could be considered a small saltwater fish tank for the purposes of this article. Really, any saltwater tank under 30 gallons is going to be a chore to maintain (my opinion of course, to each his own). Nano tanks are often considered even smaller. It should also be noted that the smaller the fish tank the harder it is to keep in my opinion. Larger tanks provide so many more options for both equipment and fish species and I strongly urge any new hobbyists to get the largest tanks they can accommodate. Leave the smaller specialty for when you become more experienced later on.Female guppies grow to 2 inches and the males are a bit smaller at around 1.5 inches. Their depending on the genes, food, nutrition and more. They are known to be small fish and get pushed around in community tanks for that reason. Be careful of larger fish trying to eat guppies. Guppies are very small fish but pack a tremendous appearance.