How come in some aquaria, in larger tanks there is no conflict between predatory species and their natural prey, such as with sand tiger sharks and fish, rays and other sharks?
2007-07-10 00:54:49 · 17 answers · asked by Nayer 1 in Science & Mathematics ➔ Zoology
They are usually pretty well fed by the staff. Otherwise they would be eating each other.
2007-07-10 01:04:17 · answer #1 · answered by Booger 3 · 0⤊ 1⤋
forget Oscars eating guppies as guppies are not an Oscars natural food they live many thousands of miles apart. and forget pirhannas becoming cannibalistic as this is due to stress and the confines of small aquaria. and besides both are not particularly large and barely grow larger than a foot each. i assume you mean large display tanks at public aquariums and why don't the sharks eat the pilot fish? the answer is as had been said that because they are feed so regularly they do not need to to hunt for food. also if you consider the size of the shark compared to the shoaling fish, the shark can actually use more energy catching the food than what it gets from eating it. and in the confines of public aquaria the shark really doesn't have the room to hunt effectively.
2007-07-10 10:23:25 · answer #2 · answered by missmollie 4 · 1⤊ 0⤋
The problem with ghost knifes is that they are a very slow moving and friendly fish. They are placid, and don't mix well with other fish unless they are also slow moving fish. I wouldn't recommend a ghost knife, they are expensive and I've tried to house them a few times without success. Other fish like mollies, guppies, platys, a betta, silver dollars, and angel fish are all slower moving. The last three are a risk though, as they are known to be fin nippers, but if you have the pipe in your tank you should be ok. I would stick to putting ghost knifes with ghost knifes. They aren't hardy fish, so you can't use them to cycle the tank, and putting them in such a big tank will probably be a waste of space seeing as there are very few choices of other fish to put them with. The best filters out there are Fluvals, I'd probably recommend an external one for that size of a tank. The water will be easier to maintain once it's cycled as it is a big tank. You don't need skimmers unless you make it a salt water tank, and you don't need UV sterilizers. You can pretty much buy any fish you like with a tank that big, I'd personally go with cichlids as they will love the larger tank, and get some dither fish like danios or guppies.
2016-05-22 04:43:53 · answer #3 · answered by ? 3 · 0⤊ 0⤋
Occasionally a smaller fish "disappears" in these aquarium. But the keepers are certainly not going to go about telling the public. There is a great deal of effort exerted feeding captive fish. There is a science around the nutrition of captive animals. Special diets are devised for certain species. Don't forget these aquarium are not just tanks full of water. They are mini ecosystems. Besides all the effort expending on feeding fish, there is also a lot in keeping those systems clean.
A technician spends all their time feeding and cleaning.
2007-07-10 01:27:38 · answer #4 · answered by Anonymous · 0⤊ 0⤋
The fishes are well fed and they soon learn that food is plentiful. There will be a certain amount for conflict in the way of bitting of fins and te eating of smaller fish but and dead fish are quickly removed from tanks so general public cannot see it.
In smaller tanks where there are fish that are one specie only and if other fish are introduced they will be killed.
2007-07-12 02:42:13 · answer #5 · answered by Anonymous · 0⤊ 0⤋
why would they when they are fed at regular times of day so they have no need to pray on other fish in the tank. Its abit like why in some parts of the country foxes dont attack chickens its because thet have so much natural wild food so they dont have to the same way they wont chace rabbboits its to much trouble
2007-07-10 01:11:24 · answer #6 · answered by Anonymous · 0⤊ 1⤋
good Question. i was watching a programme a while ago & they were at a aquarium & according to the staff its becuase they are kept fed enough so they arn't hungry enough to attack the other fish. However on the odd ocasion they have eaten there natural prey.
2007-07-10 01:06:18 · answer #7 · answered by Python 3 · 0⤊ 1⤋
They do sometimes. My mom had 3 piranhas and two of them started eating the tail of the 3rd one, well the 2 that took a bite out of the one, died 2 days later and the one with the chuncks bitten out of its tail lived.
2007-07-10 01:03:56 · answer #8 · answered by Mom22 5 · 0⤊ 1⤋
They do if you mix the wrong types. E.g. put guppies together with an oscar and you will find the former shrinking in number each day.
2007-07-10 01:07:38 · answer #9 · answered by Anonymous · 0⤊ 1⤋
cant be bothered to
also they have a ready supply of food just given to them - why would they bother getting their own if they know that they re gonna be given it in an hour or two?
2007-07-10 02:36:59 · answer #10 · answered by coy carp 3 · 0⤊ 0⤋