ArticleProceedings. Biological sciences2019
Population densities predict forebrain size variation in the cleaner fish
Article in Proceedings. Biological sciences, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
14 citing papers in PubMed, 38 citations in OpenAlex.
- Collective decision-making under predator threat is faster in guppy shoals selected for larger telencephalon size.Animal cognition · 2025Article
- Social fish have larger brains and greater relative telencephalon sizes: support for the social brain hypothesis from wild, intraspecific comparisons.Proceedings. Biological sciences · 2025Article
- Larger Fish Have Larger Brains With More Neurons Across but Not Within Cohorts Raised in Different Growth Conditions.The Journal of comparative neurology · 2025Article
- Article
- Evolution of schooling drives changes in neuroanatomy and motion characteristics across predation contexts in guppies.Nature communications · 2023Article
- Experimental expansion of relative telencephalon size improves the main executive function abilities in guppy.PNAS nexus · 2023Article
- Social isolation affects intra-specific interaction behaviour and reduces the size of the cerebellar brain region in juvenile Atlantic salmon Salmo salar.Journal of fish biology · 2022Article
- Differences in brain morphology of brown trout across stream, lake, and hatchery environments.Ecology and evolution · 2022Article
- Modelling how cleaner fish approach an ephemeral reward task demonstrates a role for ecologically tuned chunking in the evolution of advanced cognition.PLoS biology · 2022Article
- Social preferences correlate with cortical thickness of the orbito-frontal cortex.Social cognitive and affective neuroscience · 2021Article
- Why big brains? A comparison of models for both primate and carnivore brain size evolution.PloS one · 2021Article
- Brain morphology predicts social intelligence in wild cleaner fish.Nature communications · 2020Article
- Social complexity affects cognitive abilities but not brain structure in a Poeciliid fish.Behavioral ecology : official journal of the International Society for Behavioral EcologyArticle
- A reinvestigation of cognitive styles in sticklebacks: decision success varies with behavioral type.Behavioral ecology : official journal of the International Society for Behavioral EcologyArticle
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The 'social brain hypothesis' proposes a causal link between social complexity and either brain size or the size of key brain parts known to be involved in cognitive processing and decision-making. While previous work has focused on comparisons between species, how social complexity affects plasticity in brain morphology at the intraspecific level remains mostly unexplored. A suitable study model is the mutualist 'cleaner' fish
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What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.