Biostica

Largest tributaries
Salmoniformes - Salmons and Trouts
Scorpaeniformes - Mail-cheeked fishes
Salmoniformes - Salmons and Trouts
Scorpaeniformes - Mail-cheeked fishes
Perciformes - Perches
Esociformes - Pikes
Siluriformes - Catfishes
Centrarchiformes - Basses and sunfishes
Cypriniformes - Carps
Acipenseriformes - Sturgeons and Paddlefish
Gadiformes - Cods
Clupeiformes - Herrings
Anguilliformes - Eels and morays
Gobiiformes - Gobies
Gasterosteiformes - Sticklebacks
Syngnathiformes - Pipefishes and Seahorses
Atheriniformes - Silversides
Petromyzontiformes - Lampreys
Salmoniformes - Salmons and Trouts
Scorpaeniformes - Mail-cheeked fishes
Perciformes - Perches
Esociformes - Pikes
Siluriformes - Catfishes
Centrarchiformes - Basses and sunfishes
Cypriniformes - Carps
Acipenseriformes - Sturgeons and Paddlefish
Gadiformes - Cods
Clupeiformes - Herrings
Anguilliformes - Eels and morays
Gobiiformes - Gobies
Gasterosteiformes - Sticklebacks
Syngnathiformes - Pipefishes and Seahorses
Atheriniformes - Silversides
Petromyzontiformes - Lampreys
Bioštica je reka u istočnom delu Republike Srpske, Bosna i Hercegovina.
Duga je oko 30 km.
Bioštica izvire ispod planine Devetak kod sela Knežine u opštini Sokolac. Dve najveće pritoke su joj Blatnica i Kaljina.
Zajedno sa rijekom Stupčanicom, koja joj se pridružuje u Olovu, čini reku Krivaju.
Bioštica je, kao i njene pritoke, bogata ribom, najviše potočnom pastrmkom i lipljenom.