Micratya poeyi

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Version française
Wrote by Zeck, translated by Logow

Micratya poeyi
(Guérin-Méneville, 1855)

Micratya poeyi Synonyms :

  • Atya poeyi Guérin-Méneville, 1855
  • Calmania poeyi Bouvier, 1913

See taxonomy

Common names :

  • petit bouc
  • petit bouc strié
  • Caribbean Dwarf Filter Shrimp
The totality of the pictures on this index belong to de Chris Lukhaup, and are used with his avec son generous permission

Origin : Islands of the Caribbean, Cuba, Martinique, Guadeloupe, Puerto Rico, Haiti & St Domingo, … We find her on the same locations as Xiphocaris elongata. This specie has also been referenced in Central America.

Carte Micratya poeyi

Water specifications :

  • pH : If it does handle a vast rang, its natural habitat is rather neutral to basic, so 7 to 7.5.
  • GH :
  • Temperature : 23 to 28 °C / 73.4 to 82.4 °F

Size : up to 5cm

Micratya poeyiDescription : Much smaller than the usual species usually found in the aquarist trade, the shrimp is truly a filterer, in the same respect as Atyopsis moluccensis, Atyopsis spinipes or Atyoida pilipes. The characteristic rostrum is short and spikey on all the length of it’s dorsal side (up to 10), and one or two spikes on the ventral side (See drawing c of print).
Micratya poeyi This specie presents three different colouration patterns. The first form presents a line all along the back, the second is uniform in colour, and the third which is the most represented pattern, as on the pictures from Chris Lukhaup, eis a succession of transversal lines. This pattern generally goes from rather intense blue/grey to brown/light red cut by cream coloured stripes. The stripes are four and are found for the first one on the back of the cephalotorax, the fourth and sixth segment as well as the tail covering the extremities of the telson and the uropodes.

Life span : this information is not available.

Feeding habits : Filters the water to collect mainly micro particles floating in the water.

Sexual dismorphism : Invisible to human eye. The male appendages of the second pleopods are longer and finished by a tuft of strong and long spines.

Micratya poyei Reproduction : This specie uses an indirect reproduction necessitating a larval stage in brackish to even salt water conditions. The ten (sic) larval stages of this specie are documented by Wayne Hunte, published en 1979. This study was realised in a 1.5L volume (one larva for 15cm³), with a well oxygenated water at 32 ‰ salinity. The food used was wheat-germ and Tetramin in portions and with an adapted size. All but the two first stages where the larva do not feed, the feeding occurred every 12h, and water was changed every two meals. Up to the fifth larval stage, the evolutions are perfectly distinct one from another. The following stages are more arbitrary, determined to make the important morphological differences evident during the larval development. This development takes a minimum of 53 days, and a maximum of 74 days, from the moment the eggs are expulsed.

Micratya poeyi Specificity : Micratya poeyi is the only specie of the Micratya genus, which means “small sized Atya“. At the opposite of the other filterers, it is small in size, which is why in English its vernacular name is : Caribbean Dwarf Filter Shrimp.


Links :

  • PetShrimp : Micratya poeyi
  • AquariForum : Micratya poeyi
  • Practical fish Keeping : Keeping fan shrimps
  • IRD (droits réservés) : Crevettes d’eau douce de la Guadeloupe (Atyidae et Palaenaonidae), Christian Lévèque. Cahiers ORSTOM. Série Hydrobiologie, 1974, 8 (1), p. 41-49. (pdf)

Sources :

  • The complete larval development of the freshwater shrimp Micratya poeyi (Guérin-Méneville) reared in the laboratory (Decapoda, Atyidae), Wayne Hunt, Crustaceana, Suppl. 5, 1979, E. J. Brill, Leiden.

Sources (Bibliography) :

  • All about Shrimps, Crayfishes and Crabs, Uwe Werner, Aqualog Verlag, page 33
  • Süßwassergarnelen aus aller Welt, Auteurs : Andreas Karge & Werner Klotz, p 109

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