Liftande krabba ej i reeflex

[kalleT]

Hej, en pytte liten krabba halvt gömd bakom en snäcka(från sötvattenstiden fastkilad vid bakgrunden).

Kan inte hitta något liknande i reeflex.

Den är bara ca 5mm över skölden, överdrivet stor klo(bara sett ena klon). Som ni ser vit teckning på skölden, lite vitt i varje led och på klospetsarna.

good och bad?

Ändrat 1 februari 2011 av kalleT
ny bättre bild

[stigigemla]

Det kanske kan vara en vinkarkrabba. Fiddler crab på engelska.

[kalleT]

Jag har sutti i timmar men tror jag hittat svaret enligt nedan, det verkar stämma. "Min" har tre par ben inte fyra och det ser ut som att den filtrerar vattnet. Den är liten så det är svårt att se.

http://www.chucksaddiction.com/hitchcrabs.html foto 6 under "The Porcellanidae Crabs...Can be considered Reef Aquarium Safe" phuu..

samt här...

http://www.wetwebmedia.com/SWCrabIDF15.htm

"Mystery Crab (actually an Anomuran) – Likely Porcelain Crab – 8/16/09"

"Neat! It looks like a little porcelain crab, family Porcellanidae, of which there are many genera and species. They’re primarily filter feeders that rhythmically wave a pair of interesting feather/fan-like mouth parts through the water in order to gather organics, plankton, etc. Although these are referred to as crabs, they’re not actually “true” crabs (Brachyurans). They are instead Anomurans, a group that includes hermits, mole crabs, squat lobsters, etc. Both Brachyurans and Anomurans are decapod (ten-footed) crustaceans, however, crabs such as yours have 3 pairs of walking legs instead of 4. A much smaller fourth pair is folded and held either above or below the abdomen (not used for walking). They also have long antennae just distal to/behind the eyes, a mobile abdomen that can be used to propel the crab, and large claws that are used for territorial disputes and defense instead of feeding/predation. These crabs, although primarily filter feeders, are also opportunistic scavengers and detritivores. Luckily, they’re generally small and don’t pose anywhere near the risk that true crabs do (such as Xanthids – family Xanthidae). I would keep this little fellow around and enjoy! As a scavenger, it’ll likely take most foods – pellet, flake, bits of meaty foods (of marine origin). For more information, please see the following links: http://www.wetwebmedia.com/galatheids.htm

Similar species, listed under “A new porcellanid species from the Caribbean Sea”: http://www.uni-giessen.de/porcellanidae/ "