epibranchial organ
a paired dorsal diverticulum at the posterior limit of the pharynx in certain microphagous fishes. Also called gill-helix, pharyngeal organ, or pharyngeal pocket. In all forms with these organs, except some characids, prominent gill rakers extend into the organ dividing its cavity into two parts, one confluent with the pharynx, and one with the opercular cavity. Small food particles, generally plankton, are retained by the rakers, consolidated by mucus and squeezed out into the oesophagus. Found in Heterotidae, Characidae, Chanoidei, Gonorhynchoidei, Clupeidae and Engraulidae

Dictionary of ichthyology. 2009.

Look at other dictionaries:

  • pharyngeal organ — diverticulum pharyngealis (epibranchial organ (a paired dorsal diverticulum at the posterior limit of the pharynx in certain microphagous fishes. Also called gill helix, pharyngeal organ, or pharyngeal pocket. In all forms with these organs,… …   Dictionary of ichthyology

  • accessory breathing organ — labyrinth organ (a much folded suprabranchial accessory breathing organ found in Anabantoidei. Formed by vascularized expansion of the epibranchial of the first gill arch. Used for respiration in air) …   Dictionary of ichthyology

  • labyrinth organ — a much folded suprabranchial accessory breathing organ found in Anabantoidei. Formed by vascularized expansion of the epibranchial of the first gill arch. Used for respiration in air. Also called accessory breathing organ …   Dictionary of ichthyology

  • crumenal organ — bilaterally flattened pair of somewhat angular pouches or purses involving the last two gill arches and the anterior oesophagus whose posterior origin is supported by the fifth ceratobranchial and the posterodorsal tip of the fifth epibranchial… …   Dictionary of ichthyology

  • diverticulum pharyngealis — epibranchial organ (a paired dorsal diverticulum at the posterior limit of the pharynx in certain microphagous fishes. Also called gill helix, pharyngeal organ, or pharyngeal pocket. In all forms with these organs, except some characids,… …   Dictionary of ichthyology

  • ostariophysan — ▪ fish Introduction  any of about8,000 species of bony fishes (bony fish) belonging to a group that includes the majority of freshwater fishes throughout the world. Familiar representatives of this group are the minnows (minnow), suckers (sucker) …   Universalium

  • gill-helix — diverticulum pharyngealis (epibranchial organ (a paired dorsal diverticulum at the posterior limit of the pharynx in certain microphagous fishes. Also called gill helix, pharyngeal organ, or pharyngeal pocket. In all forms with these organs,… …   Dictionary of ichthyology

  • Afrikanischer Knochenzüngler — Systematik Teilklasse: Echte Knochenfische (Teleostei) Kohorte: Knochenzünglerähnliche (Osteoglossomorpha) Ordnung: Knochenzünglerartige (Osteoglossiformes) …   Deutsch Wikipedia

  • Mucophagy — is feeding on mucus of fishes or invertebrates. It may also refer to consumption of mucus or dried mucus in primates. There are mucophagous parasites, such as some sea lice that attach themselves to gill segments of fish.[1] Mucophages may serve… …   Wikipedia

  • Argentiniformes — California Slickhead, Alepocephalus tenebrosus (Alepocephaloidei: Alepocephalidae) Scientific classification Kingdom …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”