Tag Archive: shrimps


TAXONOMY
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Perciformes (Perch-likes)
Family: Gobiidae (Gobies)
Subfamily: Gobiinae

Genus/species: Stonogobiops yasha

GENERAL CHARACTERISTICS: Body white, with 3 reddish-orange stripes.

Video links

Orange-striped shrimp goby

DISTRIBUTION/HABITAT: They are found in Western Pacific in the outer reef slopes; often in pairs, hovering a few centimeters above the sandy bottom at the entrance of its burrow. Symbiotic with the red-and-white barred shrimp, Alpheus randalli

DIET IN THE WILD: The shrimp goby feeds on zooplankton and small benthic invertebrates.

Video link.  https://www.flickr.com/photos/cas_docents/39444680840/in/album-72157659465376212/

CONSERVATION: NOT EVALUATED
They are captive bred making them available to aquariums.

REMARKS: For a discussion of gobies and their commensal relationships (both parties in the relationship benefit). (see link below).
The goby benefits from the shrimp’s digging and construction skills, having access to a well-built burrow. Pistol shrimps have poor eyesight and they use gobies as an early warning system to detect predators. Gobies tend to hover just outside the shared burrow, catching passing zooplankton or small benthic invertebrates. In many cases the shrimps maintain contact with the gobies by using their long antennae.

Tropical Fish Mag.  www.tfhmagazine.com/saltwater-reef/feature-articles/pisto…

REFERENCES

California Academy of Sciences Steinhart Aquarium Hidden Reef 2018

Ron’s flickr https://www.flickr.com/photos/cas_docents/41253989801/in/album-72157659465376212/

fishbase.  www.fishbase.se/summary/Stonogobiops-yasha.html

Ron’s WordPress Shortlink wp.me/p1DZ4b-1W8

TAXONOMY
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca
Order: Stomatopoda
Family: Odontodactylidae

Genus/species: Odontodactylus scyllarus

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GENERAL CHARACTERISTICS: Beautifully colored in peacock colors of greens, blues, and reds. Has a green body, blue head, green antennal scales, red limbs. The body is elongated with a long, flattened , blue tail and ranges in size from 3–18 cm (1.2-7.0 in). Highly noticeable is the pair of clubbed-shaped, praying mantis-like claws..

DISTRIBUTION/HABITATS: Indo-Pacific Habitat: warm salt water and builds U-shaped burrows in gravel substrates. Depth ranges from 3-40 m (10-131 ft).

DIET IN THE WILD: Feeds on other shrimp, worms, snails, crabs, mollusks. Lies in wait for prey in front of burrow, then swims out and quickly crushes prey with a strong, powerful smash. The claw moves so quickly it generates cavitation bubbles, which explode with a second powerful burst. The speed with which the claw moves through the water generates a force 100 times the shrimp’s body weight.

REMARKS: Large peacock mantis shrimp generate forces powerful enough to crush the shell of a large conch, and have been known in captivity to break the glass of their tanks!

The amazingly complex eyes of mantis shrimp detect 12 base colors (compared to our 3). They also can discern ultraviolet, infrared frequencies, and the polarization of light.

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Color of Life note
Biofluorescence results from the absorption of electromagnetic radiation at one wavelength by an organism, followed by its reemission at a longer and lower energy wavelength, visually resulting in green, orange, and red emission coloration. Many species of mantis shrimp, for example, make use of fluorescent body parts when in threat display in order to intimidate or confuse either a predator or a competing male.
Ref: Color sources, California Academy of Sciences Docent program May 2015

References

Animal Diversity Web animaldiversity.org/accounts/Odontodactylus_scyllarus/

Plos one   http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0083259

Ron’s WordPress shortlink  http://wp.me/p1DZ4b-We

Ron’s flickr  http://www.flickr.com/photos/cas_docents/sets/72157608602469734/

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