Diet and Circadian Rhythm of the Feeding Activity of Tamoatá Hoplosternum Littorale (Hancock, 1828) (Siluriformes, Callichthydae) Captured In Vacacaí River, Rio Grande do Sul, Brazil. RBM. 2013;16(2):55-65. doi:10.25061/2527-2675/ReBraM/2013.v16i2.63