Eleotris pisonis

Super Group: 
Opisthokonta
Phylum: 
Chordata
Sub-Phylum: 
Vertebrata
Class: 
Actinopteri
Order: 
Perciformes
Sub-Order: 
Gobioidei
Family: 
Eleotridae
Sub-Family: 
Eleotrinae
Genus: 
Eleotris
Species: 
pisonis
Authority: 
Gmelin 1789
Synonym(s): 
Eleotris carvalhonis (Starks, 1913)
Eleotris gyrinus (Valenciennes, 1837)
Gobius amorea (Walbaum, 1792)
Gobius pisonis (Gmelin, 1789)

Diagnosis

Diagnosis_species: Gobius pisonis Gmelin. G. pinna ventrali bipartita, maxilla inferiore Iongiore. Gron. mus. 2.p. 16. n. 168. zooph. p. 83. n. 279. Eleotris capite plagioplateo, maxilla inferiore longiore, pinnis ventralibus discretis. Pis. ind. l. 3. p. 72. Raj. pisc. p. 80. n. I. Amore pixuma. Habitat in America australi.
Dorsal spines (total): 7; Dorsal soft rays (total): 9; Anal spines: 0; Anal soft rays: 9.
Diagnosis_Genus: Eleotris Bloch & Schneider. Pinnae ventrales membranae connexae. 1. Strigata. E. capite strigato, rictu obliquo, amplo, radiis pinnae dorsalis primae setis auctis, squamis subquadratis, serratis, ano medio , pinna caudali rotundata, linea laterali media, vix conspicua. Taiboi Otaheitis, Gobius strigatus, Broussonet Fasc. I. t. I Gmel, 1204. n. 23. B. 6. P. 20. V. 6. A. 19. C. 3-3/22. D. 6. 20. Corpus oblongum, teretiusculum , squamatum, caput nudum, compressum, oculi subverticales, nares geminae, dentes parvi, acuti, conferti, inaequales, introrsum versi, in maxilla inferiore longiores, lingua et palatum glabra, apertura branchialis ampla, linea lateralis recta, dorso vicinior, anus medius, caudalis rotundata. Habitat in mari pacifico prope infulam Otaheiti.
Body_length: 11.3 cm (Pezold & Cage 2002)
Body_max_length: 25 cm (male/unsexed)
Body_length_sexual_maturity_males:  5.7 cm (Teixeira 1994)
Body_length_sexual_maturity_females: and 4.3 mm (Teixeira 1994)
Sequence_ND1_ND2_COI: AY722294, AY722357, AY722157, AY722229 (Ounta de Mita, Mexico) (Thacker & Hardman 2005)

Etymology

Eleotris: The name of a Nile fish, eleotris.

Type species

The type species for the genus Eleotris is Gobius pisonis (Bloch & Schneider, 1801).

Type illustration / Type locality / Type specimen

Type illustration: Eleotris pisonis. Systema naturae per regna tria naturae, tome 1, part 3 (figure 88) (Gmelin, 1789).
Type locality: South America

Ecology

Habitat: freshwater
Habitat: estuarine
Habitat: Northwest to western Central Atlantic: Bermuda, Bahamas, South Carolina and northern Gulf of Mexico in USA to southeastern Brazil. This is a demersal amphidromous species. Adults are found on shallow, muddy or sandy bottoms (Cervigón 1994). They appear to prefer estuarine freshwater tributaries, occurring in waters with a salinity range of zero to 19 ppt. It can be found among the roots of floating macrophytes and may also feed on plant material (Nordie 1981). During low tides, this species shelters in crab holes situated closer to creeks until the next flood tide (Barletta et al. 2000).
Salinity: Marine
Subtrate: water
Oxygen_level: Oxic
Migratory: Yes. Amphidromous
Causality_of_migration: Sexual_reproduction (Winemiller and Ponwith, 1998)
Temporality_of_migration: seasonal (spring)
Depth: Epipelagic (0.2-10 m
Temperature: 30° C (Jupiter Inlet, Florida) (Christensen,1965)
Temperature: 25° C-25.5 ° C (Everglades National Park, Florida) (Roessler, 1967)
Temperature: 26.3 ° C-27° C (Coral Gables Waterway, Dade County, Florida) (Darcy, 1978)

Life cycle

Longevity: more than 3 years (4-5 years)
Reproduction_mode: sexual
Spawning_method: External fertilization in the water column
Fertility_period: Gonadal development takes place during the dry season

Feeding behaviour

Carnivorous

Mode of locomotion

Motility: motile_swimming

Reference(s)

Observation site(s)

SYMBIONTS

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Amyloodinium ocellatum Gulf Coast Research Laboratory

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