Teleostei (teleosts) >
Eupercaria/misc (Various families in series Eupercaria) >
Moronidae (Temperate basses)
Etymology: chrysops: chrysops meaning gold; eye (Ref. 1998).
More on author: Rafinesque.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic; potamodromous (Ref. 51243); depth range 0 - 13 m (Ref. 120818). Temperate; 12°C - 32°C (Ref. 12741); 55°N - 25°N, 108°W - 71°W (Ref. 86798)
North America: St. Lawrence-Great Lakes, Hudson Bay (Red River) and Mississippi River basins from Quebec in Canada and South Dakota and south to Louisiana in USA; and Mississippi River in Louisiana to Rio Grande in Texas and New Mexico, USA.
Length at first maturity / Size / Weight / Age
Maturity: Lm 28.0 range ? - ? cm
Max length : 45.0 cm TL male/unsexed; (Ref. 86798); common length : 31.8 cm TL male/unsexed; (Ref. 12193); max. published weight: 3.1 kg (Ref. 4699); max. reported age: 9 years (Ref. 12193)
Inhabits lakes, ponds and pools of small to large rivers (Ref. 5723, 86798). Occurs at depths <14 m (Ref. 120827). Juveniles feed on small invertebrates such as cladocerans, copepods, and midge larvae. Adults are piscivorous, consuming shad, silversides, and occasional young sunfish (Ref. 10294). Spawns near the surface (Ref. 120818).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Assuming same mode of reproduction as in M. saxatilis.
Page, L.M. and B.M. Burr, 2011. A field guide to freshwater fishes of North America north of Mexico. Boston : Houghton Mifflin Harcourt, 663p. (Ref. 86798)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
Fisheries: subsistence fisheries; aquaculture: experimental; gamefish: yes
Tools
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Internet sources
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5781 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01148 (0.00641 - 0.02055), b=3.07 (2.91 - 3.23), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Trophic level (Ref.
69278): 4.0 ±0.68 se; based on food items.
Generation time: 2.2 (1.9 - 4.6) years. Estimated as median ln(3)/K based on 13
growth studies.
Resilience (Ref.
120179): Medium, minimum population doubling time 1.4 - 4.4 years (K=0.23-0.73; tmax=9).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (26 of 100).
