CR

Melanoides voltae

Declining

Overview

Melanoides voltae is a freshwater gastropod mollusk endemic to the Volta River system in Ghana, West Africa. This aquatic snail belongs to the family Thiaridae and represents one of several endemic freshwater mollusks found in the region's river systems. The species inhabits flowing freshwater environments, particularly areas with rocky substrates and moderate to fast-flowing water conditions typical of the Volta River basin.

As a critically endangered species, M. voltae faces severe population declines primarily due to habitat modification and degradation of its riverine environment. The construction of dams and water management infrastructure along the Volta River has significantly altered natural flow patterns and water chemistry, creating unsuitable conditions for this specialized species.

Additionally, water pollution from agricultural runoff, mining activities, and urban development has further compromised water quality in its native range. Sedimentation and changes in substrate composition have also impacted the species' ability to maintain viable populations. The narrow geographic distribution of M.

voltae makes it particularly vulnerable to localized threats, as the entire species depends on a limited area within the Volta River system. Conservation efforts for this species remain limited, though broader freshwater conservation initiatives in Ghana may provide some indirect benefits. The species' critical status highlights the urgent need for targeted research to better understand its ecological requirements and develop specific conservation strategies.

Protection of remaining suitable habitat and restoration of degraded river sections are essential for preventing extinction of this endemic West African freshwater snail.

Melanoides voltae faces severe threats from dam construction and water management projects that have altered natural river flow patterns in the Volta River system. Water pollution from agricultural runoff, mining, and urban development has degraded water quality throughout its range. The species' narrow geographic distribution makes it extremely vulnerable to these localized environmental changes.

Threat summary

Habitat

Melanoides voltae inhabits flowing freshwater environments in the Volta River system of Ghana, particularly areas with rocky substrates and moderate to fast-flowing water. The species requires specific water chemistry and flow conditions typical of natural riverine ecosystems in West Africa.

FRESHWATER· major