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Acestrocephalus maculosus in Brazil

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Acestrocephalus maculosus   Menezes, 2006
Family:	Characidae (Characins) , subfamily: Characinae			picture (Acmac_f0.gif) by Menezes, N.A.
Order:	Characiformes  (characins)
Class:	Actinopterygii (ray-finned fishes)
FishBase name:
Max. size:	7.9 cm SL (female)
Environment:	benthopelagic
Climate:	tropical
Global Importance:
Resilience:	High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)
Distribution:	South America: known only from the tributaries of the upper Tocantins in Brazil.
Diagnosis:	Dorsal soft rays (total): 11-11; Anal soft rays: 29-31; Vertebrae: 39-41. Can be distinguished by having dark blotch at the humeral region, a character shared only with Acestrocephalus boehlkei and Acestrocephalus stigmatus. Differs from Acestrocephalus stigmatus by having 25-27 anal-fin rays (vs. 29-31), and 7-8 gill-rakers (vs. 5-6). This species has a quite peculiar general structure of the pseudotympanum which differs from that of Acestrocephalus stigmatus and all the other species of Acestrocephalus examined. Acestrocephalus maculosus has very reduced muscular hiatus as a result of the great development of the obliquus superioris muscle covering the anterior portion of the swim bladder. This makes the opening anterior to first pleural rib, this and the second pleural rib as well as the obliquus inferioris muscle not visible (Ref. 75890). Description: Dorsal fin ii,9; Anal fin iv,25-27; Pectoral fin i+13-15; Pelvic fin i+7 (Ref. 75890).
Biology:
Threatened:	Not Evaluated, see IUCN Red List  , (Ref. 36508)
Dangerous:	harmless
Coordinator:
Main Ref:	Menezes, N.A.. 2006. (Ref. 75890)
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Brazil country information
Common names:	[ No common name ]		Ref:
Status:	native		Ref:
Salinity:	freshwater
Regulations:	no regulations		Ref:
Uses:	no uses
Comments:	Found only in the tributaries of the upper Tocantins (Ref. 75890).
States/Provinces:
States/Provinces Complete?:	No
Country Information:	www.cia.gov/cia/publications/factbook/geos/br.html
Occurrences:	Occurrences    Point map
Main Ref:	Menezes, N.A., 2006
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More information:	Countries FAO areas Occurrences Introductions Ecosystem Ecology Diet Food items Food consumption Ration Predators Ciguatera Fish loss Common names Synonyms Pictures Sounds Reproduction Maturity Spawning Eggs Egg dev. Larvae Larval dynamics References Growth L-W relationship L-L relationship Length frequencies Recruitment Max. age & size Metabolism Morphology Morphometrics Gill area Brains Vision Collaborators Genetics Allele frequencies Heritability Strains Aquaculture Aquaculture profile Diseases Ecotoxicology Processing Speed Swim. type Stamps
	Note: No data are available if label is black .
Tools:	Biogeographic modelling | E-book | Field guide | Length-frequency Wizard | Life-history tool |
Internet sources:	BiOSC Point Data | CISTI | Google | GOBASE | GenBank ( genome, nucleotide ) | PubMed | Scirus | Tree of Life |   Neodat | Zoological Record
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	Entered:  Torres, Armi G.

	Ref.:				Glossary
		(e.g. 9948)				(e.g. cephalopods)
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Page created by: Eli, 20.10.03, last modified by Eli, 26.06.07