The diet of the bluntnose shiner is believed to primarily consist of algae, terrestrial invertebrates and detritus (3). The maximum lifespan of the bluntnose shiner is about three years (7); however, most individuals are unlikely to survive for more than two years (5).
The spawning season of the bluntnose shiner extends from May to September. However, it is not known whether individuals spawn several times each season or just once.The bluntnose shiner is a pelagic-broadcast spawner, meaning the eggs and sperm are released into open water for external fertilisation.
Spawning behaviour begins with the male pursuing a female and nudging the female’s abdominal region. Once the female is ready to spawn, the male wraps around the female’s body and fertilises the eggs as they are released. The eggs are semi-buoyant, causing them to be dispersed widely by the water current. The eggs develop rapidly, hatching into larvae within 24 to 48 hours after fertilisation (8).