Tag Archive: shrimp


TAXONOMY
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca
Order: Decapoda
Infraorder: Caridea
Family: Hippolytidae

Genus/species: Thor amboinensis

GENERAL CHARACTERISTICS: Base body color is drab (olive or brown), with iridescent yellow-white spots bordered by thin white and blue bands, symmetrically arranged over their bodies. The distinctive vertical position and movement of the abdomen earn this shrimp its common name of “sexy.”

Length up to 2 cm. (0.8 inches)

 

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Length up to 2 cm. (0.8 inches)

DISTRIBUTION/HABITAT: Common in tropical seas worldwide. Found in Coral reefs; in association with anemones such as form symbiotic relationships with anemones such as Entacmaea quadricolor, Macrodactyla doreensis, Stichodactyla tapetum, and Zoanthus sp., living on and around their oral discs, tentacles, or substrate very near to anemone bases.

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DIET IN THE WILD: Sexy shrimp are carnivorous feeding on matter trapped in a host anemone’s mucus, including plankton. Their diet may also include other small crustaceans, such as brine shrimp and krill. When resources are scarce, shrimp may resort to feeding on the tentacles of their hosts.

REPRODUCTION: These shrimp are protandric hermaprhodites; they are born male and may change into females later in life.
Mating is polygynandrous (promiscuous) T. amboinensis are sexually dimorphic. Males are typically smaller than females and have white spots on their pleopods (appendages). During copulation, a male transfers sperm cells from his gonopores (located on his fifth pereopods) to a female’s gonopores (on her third pereopods).
Females carry, and oxygenate eggs under their forward tail section, on the pleopods. While bearing eggs, they hold their legs under the tail to protect them.

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Lifespan ave. 3.5 years

CONSERVATION: IUCN RED LIST Not Evaluated

REMARKS: Sexy shrimp are known to vibrate their abdomen to signal or warn others. They are capable of moving very quickly, at rates of 10-15 cm/s, to escape perceived threats.

They will endure the attacks from the anemones’ nematocysts. Some studies state that a shrimp acclimates to an anemone by collecting its mucus, which camouflages it from the anemone or other studies say that a shrimp acclimates by building up chemicals that inhibit the excretions of nematocysts from anemones.

References

California Academy of Sciences, Steinhart Aquarium, Hidden Reef 2018

Ron’s flickr  https://www.flickr.com/photos/cas_docents/3574925860/in/album-72157659465376212/

ADW animaldiversity.org/accounts/Thor_amboinensis/

Ron’s WordPress shortlink  http://wp.me/p1DZ4b-1Jv

TAXONOMY
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca
Order: Decapoda
Infraorder: Caridea
Family: Hippolytidae

Genus/species: Lysmata amboinensis

GENERAL CHARACTERISTICS: Dorsal redline on tan body. Long white antennae.

DISTRIBUTION/HABITAT: Red Sea to Australia; Indonesia, Society Islands. Active day and night at cleaning stations on coral and rocky reefs, 8–25 m. Reside in pairs or groups (to 100 individuals) in caves and crevices.

cleaner shrimp24441637412_8890f98e21_oDIET IN THE WILD: It has been observed that fish with parasites may come to cleaning stations. in the reef. Certain species of fish and several types of cleaner shrimp may assist the fish in large numbers and even go inside the mouth (and then to the gill cavity) without being eaten.

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REPRODUCTION: L. amboinensis initially develop and reproduce as males then develop female reproductive organs to become hermaphrodites and function as both males and females throughout the reproductive cycle. This system called protandric simultaneous hermaphroditism is so far known only from caridean shrimp in the closely related genera Lysmata and Exhippolysmata.

REMARKS: Cleaner shrimp advertise their services by their bright coloration and by waving their very long antennae, which contrast with the dark recess of their station.

Jacques, a character in Finding Nemo, is a humpback cleaner shrimp. In aquaria, cleaner shrimp are valued because they clean not only the fish, but the tank as well.

References

California Academy of Sciences Steinhart Aquarium Color on the Reef AQA17 2017

EOL www.eol.org/pages/128343/details

Ron’s WordPress shortlink http://wp.me/p1DZ4b-1KD

Ron’s flickr https://www.flickr.com/photos/cas_docents/24441637412/in/album-72157659465376212/

TAXONOMY
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca
Order: Decapoda
Infraorder: Caridea
Family: Hippolytidae

Genus/species: Lysmata debelius

GENERAL CHARACTERISTICS: Length up to 3 centimetres (1.2 in) long, with males and females appearing similar. It has a deep blood red body, with conspicuous white antennae and white tips to the third to fifth pereiopods. There are white dots on the cephalothorax and legs; white dots on the abdomen distinguish L. splendida from L. debelius

DISTRIBUTION/HABITAT: Widespread throughout the Indo-Pacific and Indian Ocean coral reefs. Often found lingering around an Eel’s hole where it will clean the face of the eel when it sticks its head out.

DIET IN THE WILD: Carnivore. As a “cleaner shrimp,” it will set up cleaning stations and remove dead tissue and parasites from fish that present themselves. It will also scavenge for meaty bits along the substrate bottom.

REPRODUCTION: Pairs of fire shrimps will reproduce continually. Hermaphrodite, therefore any two individuals may mate. The greenish egg mass is held beneath the abdomen of the female until the larvae hatch which become free swimming, entering the plankton undergoing several weeks of development.

Water Planet

WordPress Shortlink http://wp.me/p1DZ4b-KS

flickr  http://www.flickr.com/photos/cas_docents/with/8192327370/#photo_8192327370

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