Hanno
Info
(Röding, 1798)
Giant clams (Tridacninae) are a bivalve subfamily. They belong to the family of cockles (Cardiidae) and thus to the order Cardiida. For some time now, giant clams have been threatened with extinction due to overfishing, pollution and as a result of the climate phenomenon El Niño. They are on the list of the Washington Convention on International Trade in Endangered Species.
Today, efforts are being made to preserve the species through selective breeding. In Asia, it is believed that eating the meat, especially the sphincter, has an aphrodisiac effect.
It has received the name killer mussel because it is able to hold fish or even an arm by closing the shells. So there is one or the other documentation that pearl divers could not free themselves from a mussel and drowned. DieSes one can observe often also with Putzerlippfishes, not few had to leave your life, because the mussel resisted with plucking the Lippfish and snapped.
About aquaristics:
Giant clams need high illumination and optimal water conditions (like all animals). Mussels should also only be introduced into tanks that have matured somewhat. If possible, keep them free of thread algae, small sea anemones, glass lice... The temperature in the aquarium should not exceed 28 degrees.
Attention - lanthanum treatment can lead to problems or losses. If possible, remove them from the tank during the treatment period.
About aquaristics:
Giant clams require high light levels and optimal water conditions (like all animals). Mussels should also only be introduced into tanks that have matured somewhat. If possible, keep them free of thread algae, small sea anemones, glass lice... The temperature in the aquarium should not exceed 28 degrees.
Attention - lanthanum treatment can lead to problems or losses. If possible, remove them from the tank during the treatment period.
Tridacnene in nature mechanically and chemically bore into corals and attach themselves with byssus threads. In order to get the animals, whole coral blocks are smashed when caught in the wild, therefore please always prefer the offspring (NZ), even though they are more expensive.
Tridacna crocea is more susceptible than the other species, because its foot opening is much larger and therefore wrasses and bristle worms can reach it more easily.
It is important when buying that the animal is not stuck and then torn off, because this causes bacterial infections very quickly, which the mussels usually do not survive. It would be best if it has attached itself to small stones and you buy it with the stone. Often it is the less good conditions in the aquarium that weaken the mussels too much.
In the tank itself it needs a quiet place with the brightest possible lighting, where it can stand safely and also not fall down. It takes some time for it to reattach itself by itself.
Very young tridacnas can also migrate, only the adults live sessile - mostly due to the weight of the shell.
The mussel feeds mainly on the products of its zooxanthellae.
The most interesting are their thousands of photoreceptors, with which they can see moving objects. These receptors are located in the broad mantle lobes and also ensure that light is focused to reach the zooxanthellae. (light guide effect).
The zooxanthellae are picked up while still in the larval stage, although it is still not known exactly how the bivalve does this. There is a theory that the dinoflagellates (zooxanthellae) are eaten and absorbed in the gut by special bladder cells and transported through the body to the mantle lobes where they are stored. The stored zooxanthellae enable the enormous growth rates to be achieved and the mussel to hold its own against the competitive pressure of the light-active corals.
It is assumed that e.g. Tridacna crocea can reach an age of 40 - 50 years, but with a final size of 15 cm it is the smallest species of the family Tridacnidae.
Synonyms:
Tridachnes maxima Röding, 1798
Tridachnes noae Röding, 1798
Tridacna (Chametrachea) maxima (Röding, 1798)
Tridacna acuticostata G. B. Sowerby III, 1912
Tridacna compressa Reeve, 1862
Tridacna elongata Lamarck, 1819
Tridacna elongatissima Bianconi, 1856
Tridacna fossor Hedley, 1921
Tridacna imbricata (Röding, 1798)
Tridacna lanceolata Sowerby II, 1884
Tridacna maxima var. fossor Hedley, 1921
Tridacna mutica Lamarck, 1819
Tridacna reevei Hidalgo, 1903
Tridacna rudis Reeve, 1862
Tridacna troughtoni Iredale, 1927
Giant clams (Tridacninae) are a bivalve subfamily. They belong to the family of cockles (Cardiidae) and thus to the order Cardiida. For some time now, giant clams have been threatened with extinction due to overfishing, pollution and as a result of the climate phenomenon El Niño. They are on the list of the Washington Convention on International Trade in Endangered Species.
Today, efforts are being made to preserve the species through selective breeding. In Asia, it is believed that eating the meat, especially the sphincter, has an aphrodisiac effect.
It has received the name killer mussel because it is able to hold fish or even an arm by closing the shells. So there is one or the other documentation that pearl divers could not free themselves from a mussel and drowned. DieSes one can observe often also with Putzerlippfishes, not few had to leave your life, because the mussel resisted with plucking the Lippfish and snapped.
About aquaristics:
Giant clams need high illumination and optimal water conditions (like all animals). Mussels should also only be introduced into tanks that have matured somewhat. If possible, keep them free of thread algae, small sea anemones, glass lice... The temperature in the aquarium should not exceed 28 degrees.
Attention - lanthanum treatment can lead to problems or losses. If possible, remove them from the tank during the treatment period.
About aquaristics:
Giant clams require high light levels and optimal water conditions (like all animals). Mussels should also only be introduced into tanks that have matured somewhat. If possible, keep them free of thread algae, small sea anemones, glass lice... The temperature in the aquarium should not exceed 28 degrees.
Attention - lanthanum treatment can lead to problems or losses. If possible, remove them from the tank during the treatment period.
Tridacnene in nature mechanically and chemically bore into corals and attach themselves with byssus threads. In order to get the animals, whole coral blocks are smashed when caught in the wild, therefore please always prefer the offspring (NZ), even though they are more expensive.
Tridacna crocea is more susceptible than the other species, because its foot opening is much larger and therefore wrasses and bristle worms can reach it more easily.
It is important when buying that the animal is not stuck and then torn off, because this causes bacterial infections very quickly, which the mussels usually do not survive. It would be best if it has attached itself to small stones and you buy it with the stone. Often it is the less good conditions in the aquarium that weaken the mussels too much.
In the tank itself it needs a quiet place with the brightest possible lighting, where it can stand safely and also not fall down. It takes some time for it to reattach itself by itself.
Very young tridacnas can also migrate, only the adults live sessile - mostly due to the weight of the shell.
The mussel feeds mainly on the products of its zooxanthellae.
The most interesting are their thousands of photoreceptors, with which they can see moving objects. These receptors are located in the broad mantle lobes and also ensure that light is focused to reach the zooxanthellae. (light guide effect).
The zooxanthellae are picked up while still in the larval stage, although it is still not known exactly how the bivalve does this. There is a theory that the dinoflagellates (zooxanthellae) are eaten and absorbed in the gut by special bladder cells and transported through the body to the mantle lobes where they are stored. The stored zooxanthellae enable the enormous growth rates to be achieved and the mussel to hold its own against the competitive pressure of the light-active corals.
It is assumed that e.g. Tridacna crocea can reach an age of 40 - 50 years, but with a final size of 15 cm it is the smallest species of the family Tridacnidae.
Synonyms:
Tridachnes maxima Röding, 1798
Tridachnes noae Röding, 1798
Tridacna (Chametrachea) maxima (Röding, 1798)
Tridacna acuticostata G. B. Sowerby III, 1912
Tridacna compressa Reeve, 1862
Tridacna elongata Lamarck, 1819
Tridacna elongatissima Bianconi, 1856
Tridacna fossor Hedley, 1921
Tridacna imbricata (Röding, 1798)
Tridacna lanceolata Sowerby II, 1884
Tridacna maxima var. fossor Hedley, 1921
Tridacna mutica Lamarck, 1819
Tridacna reevei Hidalgo, 1903
Tridacna rudis Reeve, 1862
Tridacna troughtoni Iredale, 1927
