Crabs could be dependable assistants within the job of maintaining the aquarium clean. They are quite efficient at eating left over food that has fallen to the aquarium's substrate along with useless vegetation.
With that being stated, it seems like it's almost a given that every aquarium ought to have its fair proportion of resident crabs. Before one proceeds to go out and buy a freshwater crab, nevertheless, there are just a few key details that one needs to be aware of.
The most common crab species found in freshwater aquariums are the fiddle crab and the pink-clawed crab. In nature, these crabs are usually not true freshwater crabs in that they inhabit river outlets where freshwater combines with seawater and kinds extra of a brackish mixture. Nonetheless, these crabs do well in freshwater aquariums.
The freshwater aquarium crabs needs to be treated simply as you'd fish in as far as the selection course of is concerned. You'll want to ask yourself the identical questions as you do about fish. How will they work together with the fish inhabitants of the aquarium? How a lot area do they want individually?
If you happen to plan on having freshwater aquarium crabs it is vital that they not be giant enough to pose a risk to your smaller fish and that they in turn not be sufficiently small to be threatened by your bigger fish. Crabs are omnivores and can eat food flakes, pellets, brine shrimp, leaves, blood worms, however they have additionally been recognized to go for smaller fishes. So in case you have, or plan on having any backside dwellers, make certain that there isn't any significant dimension mismatch between them and the crabs.
Almost about their space necessities, make certain that there is sufficient room for every crab to allocate itself one square foot of house on the underside of the aquarium. To pay attention numerous crabs in a small area can create territorial aggression and promote crab on crab violence.
Another factor to bear in mind with freshwater aquarium crabs is that they're semi-aquatic, not purely aquatic. That implies that from time to time the crab would want to emerge for a stroll on land. When individuals preserve crabs as the only inhabitants of an aquarium this is simply solved by accumulating the substrate in direction of one finish of the aquarium so as to create a slope and floor area for the crabs to emerge from the water. When they form part of a fish inhabited aquarium, nonetheless, this is not a viable option. In these cases it's best to keep a smaller, secondary tank with the substrate sloped as described above and give your crabs a weekly "shore leave" move for a day or two.
Whether your crab is in the principle aquarium or in its "shore go away" tank, it is very important be aware of their extremely curious nature. Keep some substrate rocks, aquarium decorations or pieces of driftwood which the crab can use to cover, carry and hold busy. Otherwise, crabs can turn into anxious and more aggressive towards other inhabitants of the aquarium. Additionally, make certain that the aquarium or "shore go away" tank is covered. Freshwater aquarium crabs, if given the chance, will escape their house setting and begin a quest of exterior exploration.
As with most matters associated to a freshwater aquarium, the choice so as to add crabs or not should be primarily based in your private choice and the compatibility with the fish in your aquarium. If a decision is made so as to add a crab, nevertheless, one will discover them to be a pleasant and helpful addition to most freshwater aquarium environments.
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