how are seahorses kept in tanks?
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I use a marineland eclipse 29 gallon tank.  The kit came with everything you need to keep seahorses.  The specific gravity of the tank needs to be about 1.022 and the temperature will vary depending on the type of seahorse.  You will need some live rock to start up and cycle your tank (it will take a few months).  You can purchase captive bred seahorses at marine aquarium stores or on line that have been trained to eat frozen mysis shrimp.Try www.seahorse.org
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In the wild fiddler crabs are scavengers, eating bits of organic matter they find in the sand/mud. In captivity, they can be fed sinking crab food, fish food meant for scavengers (sinking tablets, shrimp pellets, etc), and freeze dried plankton and shrimp. \n\nSigns of health in fiddler crabs include growth and regular molting. Once a crab molts, their previous exoskeleton will likely be whole in the tank, looking eerily like a ghost. It is a good idea to leave the exoskeleton in the tank, at least for a week or so. Often the crabs will ingest part of the shed exoskeleton, and it serves as an excellent source of calcium (which they need to produce their new exoskeletons). Claws and legs may be lost but will regenerate over a couple of molts. \n\nFiddler crabs may produce eggs in captivity (the female carries eggs on her belly), but successful rearing of the young in the aquarium is next to impossible due to the way their natural live cycle works (the larvae grow in deeper ocean waters and return to shore at maturity).
32854
Fishes, as all other vertebrates, have closed circulatory systems; they have a single blood circuit in which the heart pumps the blood toward the gills where it picks up oxygen, and is then distributed to the body. However, our (human) anatomy is very derived with respect to aquatic pisciform vertebrates. In fishes the circulatory system is very symmetrical and more metameric. The best place to look is the gill area, where the major vessels occur. The heart, which looks like an elongated bulb, is situated ventrally right behind the gill basket. The ventral aorta is the major vessel extending forward below the gills, and emits branches to each functional gill. Once they go through the gill filaments, these vessels reunite dorsally and form the dorsal aorta (paired, then joined). Other vessels are difficult to observe as they usually collapse in dead materials, but if you have fresh large specimens you could try injecting a colored rubber solution (VERY carefully) inside the largest vessel you can find and if the walls are not broken, you will get an internal cast of part of the system. \nAlso look for the dorsal longitudinal vessels that are really close to the vertebrae, passing through the haemal arches.
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Starfish prolapse their "stomach" inserting it into the shells of their favorite food, clams/mussels.  This way the starfish can digest/ingest the meat while the prey is still inside the shell.  \nSome sea cucumbers expel their stomach and other inner organs (which are easily regenerated) when being attacked.  The hope is the predator will be distrated by the insides and the sea cucumber can get away.
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Put in a plastic bag, make sure you leave holes in them, of course not at water level. Your fish will survive, don't worry. Fresh fish is better then dead ones.
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I used to keep fish. Goldfish to start with, along with Black Mollys, then got into tropical fish and then a salt water tank. It's a lot of work though, and can take up a lot of space, especially with a bigger tank and the equipment needed for a bigger tank. You want them to have enough space so they're not overcrowded.\n\nGoldfish are pretty easy and there are many ready-to-feed foods (flakes for example) for goldfish in pet stores. Get a book about goldfish (or other fish) or do research on line. Online might be best as the information would likely be more current.\n\nOther examples of "easier" fish and what they eat are:\n\n"GUPPY (Poecillia reticula):\nMiddle America: Prolific breeders. Males are very colorful. Active and peaceful. Livebearer.\nFoods: Flake Food. \n\nBLACK MOLLY (Poecillia sphenops):\nMexico to Venezuela: Suitable for beginners. Active, peaceful, eat algae. Prefers hard water. For propagation, breeding traps are recommended. Livebearer.\nFoods: Flake Food. \n\nSWORDTAIL (Xiphophorus helleri):\nMexico, Guatemala: Easy to maintain, but prospers only with varied diet. Livebearer.\nFoods: Flake Food, Color Food, BloodWorms. \n\nPLATY (Xiphophorus macalatus):\nMexico, Guatemala: Essential for beginners. Brings life and color to the aquarium. Livebearer.\nFoods: Flake Food, Color Food, BloodWorms. \n\nPEPPERED CATFISH (Corydoras paleatus):\nMiddle Amazon: Peaceful, charming bottom dweller. Feels more comfortable in an aquarium with small gravel or fine sand. Will clean up leftover food from the bottom. Scavenger.\nFoods: Tablets, Granules. \n\nSUCKERMOUTH (Plecostomus punctatus):\nAmazon: Peaceful bottom dweller. Prefers to eat at night, therefore, add one Tablet per large fish before turning off the lights. Scavenger.\nFoods: Tablets, Granules."\n\n-- http://home.ivillage.com/pets/birdssmallpets/0,,30n7,00.html
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Crabs have gills, but they usually can't stay on land for too long because they must keep their gills moist in order to breathe. They also have plates around their gills that protect them from losing moisture.\n\nCrabs that live on land live in cool, moist places so that they can breathe. They also drink water from the ground, or dew or water vapor, and can store it in their bladder or blood.\n\nThey do not have lungs.
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Yes. Fish that live in saltwater lose moisture from their bodies through osmosis. These fish need to drink lots of water, or they'll become dehydrated. The extra salt is then simply excreted.
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All use thier kidneys, just as mammals do.\n\nSome seabirds (not all) also have special salt exctreting glands at the base of their beaks that helps them remove excess salt water.
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You could use a regular stock tank.  Not pretty, but will last a LONG time.
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Female Reproductive System.\n\nDescription:\nThis is the human's reproductive system, that is capable of producing a new being to the world. This is situated in the female gender of any species. (But we do find certain exceptions like, Sea Horses, where the female sea-horse simply produces the eggs, yet hands them over to the male sea-horse to take care of! mostly mistaken to believe that male sea-horses do have a reproductive system.) Its the only natural way of reproducing a specific being to the world.(Their are other ways, to reproduce species, in a lab i.e. cloning, tube.) \n\nBenifit:\nReproduction of a specific specie would keep them away from the Red-Data-Book, where all the endangered species are listed.\n\nThis is a very basic explanation.\n\nHope it is helpful!\nGood Luck!
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There are regulations to follow in transporting live  marine animals. A specially  designed containers suited for the kind of animal are used with specified guidelines to be complied.♥ Check out  this link to get the clear picture of the process:\nhttp://cites.org/eng/resources/transport/E-TranspGuide.pdf#search='live%20marine%20animals%20transportation%20overseas'
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GO TO:\nhttp://aquarium.ucsd.edu/challenger/index.cfm
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Well, their respitory system like their circulatory system allowed fish to live in the water for their entier lives. Most animals would die under the extreme water pressure and lack of breathable oxygen, but fish were able to adapt to live in the water.
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They only hold the eggs in a special sac, until they hatch.  (I think seahorses are egglayers.)  Once the young seahorses are ready to lead independent lives, he dumps them out of the sac.\n\nI think it is comparable to the way male emus incubate the eggs of their partners.  Male emus (an Australian bird, similar to the ostrich and rhea) also cares for the young; they follow him, for a while after hatching.\n\nSee?  The females lay eggs / give birth, really.  These males just participate in care of their offspring.  Their babies are thus more likely to grow up and have offspring; the trait has selective advantages.\n\nIn general, females put a lot more into young than males do.  In some species, the way "female" is distinguished from "male" is by comparing the size of their gametes.  Note how sperm are smaller than ova, for example.  In many cases, the female adds a huge load of nutrients to the young, too; the yolk + / or white of the egg, the placental nutrition of the foetus, the milk of mammals...  It all weakens the females, in cases where nutrients are limiting (which is the normal situation, "in the wild".\n\nIn cases where males take on the bulk of after - care, it just evens the load a bit, really.  It lets the females get back to replenishing their body nutrients, to get ready for the next brood.... probably sired by the same male.  (He wins again.)
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Try adding some cage furniture like a hollow log. Snakes and other reptile like a lot of hiding spots to make them feel secure. The enclosure also can be too small, I recommend no less than a 20g tank.
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Leaf dragons are gorgeous fish! The leaf dragon is better known as leafy sea dragon.\nThey're relatives of the seahorses and pipefishes, and actually look like extremely well camouflaged seahorses. Their bodies have excrecences that simulate underwater algae and slowly move with the water, so that they seem like masses of plants just drifting by, similar to the sea weeds.\nIn other respects, their characteristics and biology are the same as other seahorses (Family Syngnathidae).