Rajella eisenhardti Long & McCosker, 1999
Galapagos grey skate
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| Native range | All suitable habitat | Point map | Year 2050 |
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| This map was computer-generated and has not yet been reviewed. |
| Rajella eisenhardti AquaMaps Data sources: GBIF OBIS |
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No image available for this species;
drawing shows typical species in Rajidae.
Google image
drawing shows typical species in Rajidae.
Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Elasmobranchii (sharks and rays) > Rajiformes (Skates and rays) > Rajidae (Skates)
Etymology: Rajella: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335); eisenhardti: Named after E. Roy Eisenhardt.
Eponymy: Emil Roy Eisenhardt (d: 1939) is Director Emeritus of the California Academy of Sciences. [...] (Ref. 128868), visit book page.
More on authors: Long & McCosker.
Etymology: Rajella: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335); eisenhardti: Named after E. Roy Eisenhardt.
Eponymy: Emil Roy Eisenhardt (d: 1939) is Director Emeritus of the California Academy of Sciences. [...] (Ref. 128868), visit book page.
More on authors: Long & McCosker.
Environment: milieu / climate zone / depth range / distribution range Ecology
Marine; bathydemersal; depth range 757 - 907 m (Ref. 31078). Deep-water
Distribution Territories | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri
Southeast Pacific: Galapagos Islands. Not in Compagno's 1999 checklist (Ref. 35766).
Size / Weight / Age
Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449).
Main reference
Upload your references | References | Coordinator : McEachran, John | Collaborators
Long, D.J. and J.E. McCosker, 1999. A new species of deep-water skate, Rajella eisenhardti (Chondrichthyes: Rajidae) from the Galápagos Islands. Proc. Biol. Soc. Wash. 112(1):45-51. (Ref. 31078)
IUCN Red List Status (Ref. 130435: Version 2025-2 (Global))
Least Concern (LC) ; Date assessed: 05 February 2019
CITES
Not Evaluated
Threat to humans
Harmless
Human uses
FAO - Publication: search | FishSource |
More information
Trophic ecology
Food items (preys)
Diet composition
Food consumption
Food rations
Predators
Food items (preys)
Diet composition
Food consumption
Food rations
Predators
Ecology
Ecology
Ecology
Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Recruitment
Abundance
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Recruitment
Abundance
Life cycle
Reproduction
Maturity
Maturity/Gills rel.
Fecundity
Spawning
Spawning aggregations
Eggs
Egg development
Larvae
Larval dynamics
Reproduction
Maturity
Maturity/Gills rel.
Fecundity
Spawning
Spawning aggregations
Eggs
Egg development
Larvae
Larval dynamics
Anatomy
Gill area
Brain
Otolith
Gill area
Brain
Otolith
Physiology
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Genetics
Genome
Genetics
Heterozygosity
Heritability
Genetic Diversity
Genome
Genetics
Heterozygosity
Heritability
Genetic Diversity
Human related
Aquaculture systems
Aquaculture profiles
Strains
Ciguatera cases
Stamps, coins, misc.
Aquaculture systems
Aquaculture profiles
Strains
Ciguatera cases
Stamps, coins, misc.
Tools
Special reports
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Internet sources
AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoobank | Zoological Record
Estimates based on models
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Phylogenetic diversity index (Ref. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
| Bayesian length-weight | a=0.00309 (0.00144 - 0.00663), b=3.24 (3.07 - 3.41), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
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Trophic level (Ref. 69278) |
3.6 ±0.5 se; based on size and trophs of closest relatives |
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Resilience (Ref. 120179) |
Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be <100). |
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Fishing Vulnerability (Ref. 59153) |
Low to moderate vulnerability (34 of 100). 🛈 |