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Craterocephalus marjoriae Whitley, 1948
MARJORIE' S HARDYHEAD
Marjorie's Hardyhead; Marjorie's Freshwater Hardyhead; Silver-streak Hardyhead; Silverstreak Hardyhead; Marjories Hardyhead

Life   Vertebrata   Fish   Atherinidae   Craterocephalus


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http://www.fishbase.org/Summary/speciesSummary.php?genusname=Craterocephalus&speciesname=marjoriae ---> http://52.67.158.155/Summary/speciesSummary.php?genusname=Craterocephalus&speciesname=marjoriae
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Craterocephalus marjoriae, Marjorie's hardyhead
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Common name (e.g. trout)

Genus + Species (e.g. Gadus morhua)

Craterocephalus marjoriae Whitley , 1948

Marjorie's hardyhead Upload your photos  and  videos
Google image Image of Craterocephalus marjoriae (Marjorie\ No image available for this species;
drawing shows typical species in Atherinidae.

Classification / Names Common names | Synonyms | Catalog of Fishes( genus , species ) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Atheriniformes (Silversides) > Atherinidae (Silversides) > Craterocephalinae
Etymology: Craterocephalus: Greek, krater, -eros = bowl, mixing vessel + Greek, kephale = head (Ref. 45335 ) .
More on author: Whitley .

Environment: milieu / climate zone / depth range / distribution range Ecology

Freshwater; benthopelagic. Tropical; 24°C - 30°C (Ref. 2060 )

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Oceania: endemic to Australia.

Size / Weight / Age

Maturity: L m   ?   range ? - ? cm
Max length : 8.5 cm SL male/unsexed; (Ref. 44894 ); common length : 5.0 cm SL male/unsexed; (Ref. 5259 )

Short description Morphology | Morphometrics

Distinguished from Craterocephalus marianae and Craterocephalus munroi and all other members of the genus by a combination of the following: head 3.0-3.4 (3.1); greatest body depth 3.6-4.7 (4.1); least body depth 8.8-11.0 00.0); origin of pectoral fin to anus 2.7-3.1 (2.9), all in SL. Dorsal process of premaxilla 1.1-1.70.4 in eye. Midlateral scale count 28-30 (29.1); transverse scale count 5.5-6.5 (6.0); vertebral count 30-32 (31.4). Position of anus in relation to tip of pelvic fin from 0.5 scales in front to 2 scales behind tip of pelvic fin. Differs osteologically from all other Craterocephalus species by a combination of the following: shape of anterior medial process of maxilla; lack of interdorsal pterygiophores (but shared with some other members of C. eyresii group); minute anterior process usually present on cleithrum; dorsal process of cleithrum also present; basisphenoid short and thick. Differs genetically from Craterocephalus marianae at the following loci: ADA, CK, FDP, GPI-l,MPI, PGM and from C. munroi at CK, FDP, GLDH, GPI-l, MPI, PGM. Unique at GPI-lf (Ref. 26703 ).

Biology     Glossary (e.g. epibenthic)

Lives in clear flowing streams where it is common along the vegetated margin. Generally in shallow water over sandy or gravelly substrates. A shoal-forming species. Capable of multiple spawnings between September and January (with peak activity early in the season). It has reproduced in captivity (Ref. 44894 ). Feeds mostly on aquatic insects and their larvae, micro-crustaceans, algae and fish eggs (Ref. 44894 ).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator : Dyer, Brian S. | Collaborators

Allen, G.R. , 1989. Freshwater fishes of Australia. T.F.H. Publications, Inc., Neptune City, New Jersey. (Ref. 5259 )

IUCN Red List Status (Ref. 130435 )

  Least Concern (LC)  ; Date assessed: 15 February 2019

CITES

Not Evaluated

CMS (Ref. 116361 )

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO - Publication: search | FishSource |

More information

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Special reports

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Summary page | Point data | Common names | Photos

Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes : genus , species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome , nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go , Search | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82804 ):  PD 50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high]. Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref. 93245 ). Trophic level (Ref. 69278 ):  2.9   ±0.36 se; based on food items. Resilience (Ref. 120179 ):  High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.). Fishing Vulnerability (Ref. 59153 ):  Low vulnerability (10 of 100).

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Updated: 2024-04-26 09:50:34 gmt
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