| Specimen ID | 34938 |
| Group | Fishes |
| Genus | Noturus |
| Species | insignis |
| Common Name | Margined Madtom |
| State | MA |
| County | Middlesex |
| Locality | Crooked Springs Brook, Chelmsford |
| Mapping Accuracy | Approximate |
| HUC8 Name | Merrimack River |
| HUC8 Number | 01070006 |
| Map | |
| Collection Day | 28 |
| Collection Month | 7 |
| Collection Year | 1987 |
| Year Accuracy | Actual |
| Potential Pathway | released bait | hitch hiker with stocked fish |
| Status | established |
| Reference 1 |
| Ref. Number: | 103 |
| Author: | Hartel, K.E. |
| Date: | 1992 |
| Title: | Non-native fishes known from Massachusetts freshwaters. |
| Journal: | Occasional Reports of the MCZ Fish Department |
| Volume: | 2 |
| Pages: | 1-9 |
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| Reference 2 |
| Ref. Number: | 16076 |
| Author: | Hartel, K.E., D.B. Halliwell, and A.E. Launer. |
| Date: | 2002 |
| Title: | Inland fishes of Massachusetts. |
| Publisher: | Massachusetts Audubon Society |
| Pages: | 328 |
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| Record Type | Specimen |
| Disposal | MCZ |
| Museum Cat Number | MCZ 69534 |
| Freshwater/Marine | Freshwater |
| Number Collected | 1 |
| Size | 85-95 mm |
