Fish biology, ecology, and behavior

Adaptive spatiotemporal filtering of social electrosensory signals by cerebellar feedback

The paper shows cerebellar feedback in brown ghost knifefish filters both temporal and spatial features of natural electrosensory signals, adapting to recent input statistics to improve sensory representation efficiency.

Biodiversity knowledge and conservation shortfalls in Rivulidae fishes

This study assesses biodiversity and conservation gaps in Rivulidae fishes, finding 103 undescribed species, 5.34% adequate sampling, and 179 threatened species.

Modelling individual ampullary afferents in two species of gymnotiform fish using simulation-based inference

The paper develops a mechanistic model of ampullary electroreception in two electric fish species using simulation-based inference to capture response properties and spectral characteristics.

Detection and localization of conspecifics in ghost knifefish are influenced by the relationship between the spatial organization of receptors and signals.

The paper models how receptor density affects signal detection and localization in ghost knifefish, finding that higher density improves detection but not localization for diffuse signals.

Spatial coding of conspecifics in subpopulations of hindbrain pyramidal cells of the gymnotiform electrosensory system

The paper investigates how subpopulations of hindbrain pyramidal cells in weakly electric fish encode spatial information about conspecifics, finding that specific cell types provide more accurate spatial coding.

Electric signal polymorphism predicts dietary niche partitioning in a weakly electric fish

The paper tests if electric signal polymorphism in electric fish affects prey detection and diet, finding waveform type predicts dietary differences.

Latent feeding behaviors promote trophic versatility in cichlids

The paper shows cichlid fish use similar benthic feeding behaviors regardless of their ecological niche, suggesting latent feeding behaviors support trophic versatility.

Whole-body central processing of lateral line inputs encodes flow direction relative to the center-of-mass

The paper shows that larval zebrafish encode flow direction relative to their center-of-mass in the hindbrain, enabling motor responses to fluid motion.

The Genomic Basis of Electric Signal Diversity

This study identifies de novo regulatory mutations in noncoding regions that drive repeated evolution of biphasic electric organ discharges in elephantfishes.

One More Lap: Environmental Modulation of Small-Scale Exploration in Weakly Electric Fish

This study shows that exploration in weakly electric fish is temporally organized through coordinated circadian modulation of electrosensory activity and locomotion.

Molecular insights into electroreceptor ribbon synapses from differential gene expression in sturgeon lateral line organs

The paper examines gene expression in electroreceptor and mechanosensory organs of sturgeon, identifying shared and distinct molecular features of their ribbon synapses.

Interactive electrical behaviour in mormyrid weakly electric fish: Jamming avoidance response or social interaction?

This study examines interactive electrical behaviours in mormyrid fish, finding they are not primarily for jamming avoidance but instead support social cohesion and communication.

The taxonomic status of Farlowella colombiensis Retzer & Page 1997 with comments on species of the F. acus species group (Loricariidae: Loricariinae).

The paper reassesses the taxonomic status of Farlowella colombiensis and finds it to be a junior synonym of Farlowella acus, providing a key and remarks on species in the F. acus group.

Direct cerebellar control over motor production in a species with extreme cerebellar enlargement

This study shows that the cerebellum in elephant-nose fish directly controls motor production, challenging the view that cerebellum only fine-tunes movement.

Problem-solving without a cortex: inferior lobe drives goal-directed object manipulation in cichlid fish

This study shows that cichlid fish use their inferior lobe, not the telencephalon, for goal-directed object manipulation in a puzzle-box task.

Mechanistic insights into gene expression changes and electric organ discharge elongation in mormyrid electric fish

The paper investigates gene expression changes associated with EOD elongation in mormyrid electric fish using hormone-induced treatment and RNAseq analysis.

An end-to-end model of active electrosensation

The paper develops an end-to-end model of electrosensation in weakly electric fish, using artificial data to train an ANN that extracts object properties.

Unsupervised Approach for Electric Signal Separation in Gnathonemus petersii: Linking Behavior and Electrocommunication

This paper develops an unsupervised algorithm to separate electric organ discharges from two free-swimming Gnathonemus petersii, improving accuracy and efficiency over supervised methods.

Life on the road: fish communities composition in roadside ditches of the Atlantic Forest

The paper assesses fish community composition in roadside ditches of the Atlantic Forest, finding higher species richness during the wet season and dispersal limitation as a key structuring factor.

Illumination mediates a switch in both active sensing and control in weakly electric fish

This study shows that weakly electric fish adjust their movement and sensory processing based on illumination levels, switching between active sensing and multisensory reweighting near a critical threshold.

Collective Sensing in Electric Fish

This study shows African weakly electric fish use conspecifics' electrical pulses to enhance electrolocation, object discrimination, and information transmission.

Hormonal coordination of peripheral motor output and corollary discharge in a communication system

This study shows testosterone directly modulates both peripheral motor output and corollary discharge timing in mormyrid fish to match altered sensory feedback.

An Internal Model of Sensorimotor Context in Freely Swimming Electric Fish

The paper demonstrates how neural circuits in electric fish cancel movement-related input to the electrosensory system, revealing context-specific predictions of self-generated sensory feedback.

Neural Readout of a Latency Code in the Active Electrosensory System

The paper shows that in mormyrid fish, postsynaptic neurons use both spike latency and spike count from electroreceptor afferents to encode stimulus amplitude, without relying on motor corollary discharge.

Functional and ultrastructural analysis of reafferent mechanosensation in larval zebrafish

This study investigates how zebrafish larvae distinguish self-generated reafferent mechanosensory signals from exafferent stimuli using lateral line hair cells and neural circuits.

Mixed selectivity coding of sensory and motor social signals in the thalamus of a weakly electric fish

The paper investigates how mixed selectivity codes sensory and motor social signals in the thalamus of weakly electric fish, showing their role in social behavior and dominance.

The early development and physiology of Xenopus laevis tadpole lateral line system

The study investigates the physiological role of the Xenopus laevis tadpole lateral line system, showing that activating the anterior lateral line evokes escape responses and halts ongoing swimming.

Corollary discharge prevents signal distortion and enhances sensing during locomotion

The paper develops a model to show how corollary discharge modulates lateral line sensory feedback in larval zebrafish during swimming, preventing habituation and enhancing sensing.

Spooky interaction at a distance in cave and surface dwelling electric fishes

The paper studies electrosensory interactions in cave and surface dwelling electric fish, finding sustained frequency differences and long-distance interactions despite expected jamming avoidance.

Signal diversification is associated with corollary discharge evolution in weakly electric fish

The paper investigates how corollary discharge inhibition coevolves with electric organ discharge (EOD) duration in mormyrid fish, finding a strong correlation between inhibition delays and EOD timing.