BC Conservation Data Centre: Conservation Status Report
Notropis hudsonius
Spottail Shiner
| Scientific Name: | Notropis hudsonius |
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| English Name: | Spottail Shiner |
| Provincial Status Summary | |
| Status: | S1S2 |
| Date Status Assigned: | May 10, 2010 |
| Date Last Reviewed: | May 15, 2019 |
| Reasons: | The only confirmed native population of Spottail Shiner is in Maxhamish Lake, in northeast B.C. |
| Range | |
| Range Extent: | A = <100 square km |
| Range Extent Comments: | Restricted to the far northeast corner of the province; until recently, known only from Maxhamish Lake (Royal B.C. Museum collections), but further collecting may reveal more sites (Peden 1990). Introduced into Charlie Lake 1986 (Hammond 1986). Have been found in mainstem Peace River since 1989 and in Beatton River since 1983 (Fisheries Information Summary System). This range extension may be a result of flow regulation. |
| Area of Occupancy (km2): | D = 6-25 |
| Area of Occupancy Estimate (km2): | 12 |
| Area of Occupancy Comments: | The area of Maxhamish Lake is approximately 50 km2 (12 4km2 grid cells). |
| Occurrences & Population | |
| Number of Occurrences: | A = 1 - 5 |
| Comments: | Maxhamish Lake may be the only native indigenous population. However, records from other locations listed in FISS (e.g. Tupper River) that are not within the influence of Charlie Lake could represent other native populations. They were introduced to Charlie Lake in 1986. It is unknown how far the introduced population has spread. Additional introductions are also likely due to the use of this species as a popular bait fish.This species is best surveyed at night therefore are likely under represented in regular surveys. |
| Number of Occurrences with Good Viability / Ecological Integrity: | Rank Factor not assessed |
| Number of Occurrences Appropriately Protected & Managed: | B = 1 - 3 |
| Comments: | Maxhamish Lake is in a protected area. |
| Population Size: | U = Unknown |
| Comments: | Unknown, but this species can be very abundant in lakes and large rivers elsewhere in its range. |
| Threats (to population, occurrences, or area affected) | |
| Degree of Threat: | CD = Medium - low |
| Comments: | There is extensive mineral exploration and logging occurring in the north east of the province which means that access as well as potential pollutants may increase in time. Other possible risks include exotic and other fish introductions or taxonomic difficulties as well as the inherent risks that face a single population (Haas 1998). |
| Trend (in population, range, area occupied, and/or condition of occurrences) | |
| Short-Term Trend: | G = Relatively Stable (<=10% change) |
| Comments: | DeGisi (2000) found there was no indication of a reduction in population; however he does qualify with "one reconnaissance inventory does not provide an adequate basis for quantitative statements about the abundance of fish populations or how this may have changed with time". |
| Long-Term Trend: | U = Unknown |
| Other Factors | |
| Intrinsic Vulnerability: | C=Not intrinsically vulnerable |
| Environmental Specificity: | C=Moderate. Generalist or community with some key requirements scarce. |
| Other Rank Considerations: | |
| Information Gaps | |
| Research Needs: | Life history and biological information and requirements. |
| Inventory Needs: | The far northeastern corner of the province is poorly known with regard to fish distribution. |
| Stewardship | |
| Protection: | |
| Management: | |
| Version | |
| Author: | Cannings, S.G. and Pollard, S. |
| Date: | May 17, 2010 |
| References | |
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DeGisi, J.S. 1999. Reconnaissance (1:20 000) Fish and Fish Habitat Inventory of Maxhamish Lake (Watershed Code 211-107100-34800-01). BC Parks, Fort St. John
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Haas, G.R. 1998. Indigenous fish species potentially at risk in BC with recommendations and prioritizations for conservation, forestry/resource use, inventory and research. Fish. Manage. Rep. No. 105, B.C. Minist. Fish., Res. and Dev. Sect., Vancouver, BC.
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Please visit the website Conservation Status Ranks for information on how the CDC determines conservation status ranks. For global conservation status reports and ranks, please visit the NatureServe website http://www.natureserve.org/.
Suggested Citation:
B.C. Conservation Data Centre. 2010. Conservation Status Report: Notropis hudsonius. B.C. Minist. of Environment. Available: https://a100.gov.bc.ca/pub/eswp/ (accessed Jan 24, 2025).