Various species of field-collected freshwater fish displaying DELT
By Chesapeake Bay Activities
August 2025 (approx.)
Detailed Description
Various species of field-collected freshwater fish displaying DELT, including A) an eroded fin, B) melanistic areas, C) parasitic leeches (black arrow) and black spots (trematode, white arrows), D) a cyst (on gill), and E) tumors.
Sources/Usage
Public Domain.
Related
A regional assessment of fish health in the Chesapeake Bay watershed
Fish diseases in freshwater ecosystems pose significant ecological and socioeconomic challenges; yet, monitoring them in wild populations is complex due to interactions between pathogens, hosts, and environmental conditions. External DELT (deformity, erosion, lesion, tumor, and parasite) data (fig. 1) provide a rapid and broad measure of fish health but are a relatively coarse indicator that...
Related
A regional assessment of fish health in the Chesapeake Bay watershed
Fish diseases in freshwater ecosystems pose significant ecological and socioeconomic challenges; yet, monitoring them in wild populations is complex due to interactions between pathogens, hosts, and environmental conditions. External DELT (deformity, erosion, lesion, tumor, and parasite) data (fig. 1) provide a rapid and broad measure of fish health but are a relatively coarse indicator that...