V18(2)

Carlos A. Martínez-Palacios, Sibila Concha-Santos, Elva M. Toledo-Cuevas, María G. Ríos-Durán, Carlos C. Martínez-Chávez, Pamela Navarrete-Ramírez, Luciana Raggi, Carlos Strussmann, Juan P. Hualde, Mariela A. Demicheli, Jorge Fonseca-Madrigal
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Trophic strategies of the invasive Twospot livebearer (Pseudoxiphophorus bimaculatus, Teleostei: Poeciliidae) in a gradient of environmental quality in central Mexico

Systematic revision of the Neotropical catfish genus Scleronema (Siluriformes: Trichomycteridae), with descriptions of six new species from Pampa grasslands

High levels of docosahexaenoic acid are present in eight New World silversides (Pisces: Atherinopsidae)

Does soil color affect fish evolution? Differences in color change rate between lineages of the sailfin tetra

Physical habitat as predictor of fish trophic structure in Brazilian Atlantic rainforest streams

A new species of Cyphocharax (Characiformes: Curimatidae) with a horizontal color pattern from the rio Tapajós drainage, Amazon basin, Brazil

A new species of Parotocinclus with reduced adipose fin (Loricariidae: Hypoptopomatinae), from the rio Jacuípe basin, Bahia State, Brazil

A new species of Knodus (Characiformes: Characidae: Stevardiinae) from the rio Aripuanã, rio Madeira basin, Brazil

New species of Curimatopsis from the río Caroni, Orinoco basin, Venezuela, with comments on C. macrolepis (Characiformes: Curimatidae)

A new miniature species of Odontocharacidium (Characiformes: Crenuchidae) from the Río Orinoco basin, Venezuela

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