AnimaliaHighest rank in taxonomy. Groups all life into domains: Animalia, Plantae, Fungi, etc.IUCN LCInternational Union for Conservation of Nature — the world authority on species extinction risk, using standardized criteria. — Least Concern — widespread and abundant; not at immediate risk of extinction.In ProgressCurrent stage of this record in the editorial review workflow. Recent Sighting
Rypticus bicolor
Mottled Soapfish
Valenciennes, 1846
Detailed Texts Multi-lang
A small, secretive fish with an elongated body and a rounded tail. Its skin is covered in mucus that contains grammistin, a toxin that creates a soapy foam when the fish is stressed.
Added by
Anonymous Curator
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Under Review
Last modified by
Julia Trouin
TaxonomyBiological classification ranks placing this species within the tree of life, from Kingdom down to Genus.
PhylumRank below Kingdom. Groups organisms sharing a fundamental body plan (e.g., Chordata = vertebrates and some invertebrates).Chordata
ClassRank below Phylum. Subdivides by structural traits (e.g., Mammalia, Aves, Reptilia, Insecta).Actinopterygii
OrderRank below Class. Groups related families sharing common ancestry (e.g., Carnivora, Primates).Perciformes
FamilyRank below Order. Groups closely related genera (e.g., Felidae = cats, Canidae = dogs).Serranidae
GenusRank just above Species. The first word in the two-part binomial scientific name.Rypticus
Taxonomic AuthorityThe scientist who first formally described and published this species, followed by the year of publication.Valenciennes, 1846
Record Completeness
93%Coming soon
Ecology & StatusHow this species lives: habitat preferences, diet, behavior, population status, and role in its ecosystem.
OriginWhether the species is native (evolved here), endemic (found only here), or introduced by human activity.
Native
Population TrendDirection of change in population size over time: increasing, stable, decreasing, or unknown.
Stable
Breeding SeasonTime of year when this species typically reproduces or flowers.
Summer
Trophic RolePosition in the food chain: producer, herbivore, carnivore, omnivore, decomposer, or parasite.
Carnivore
Recent SightingsWhether this species has been observed in the wild in Costa Rica within recent years.
Yes
Habitat SummaryOverview of the specific ecosystems and environments where this species is found in Costa Rica. Multi-lang
Inhabits rocky and coral reefs in the Eastern Pacific, typically found in crevices or under ledges at depths of 5 to 50 meters.BehaviourDaily activity patterns, movement, territory use, foraging style, and seasonal behavioral changes. Multi-lang
Nocturnal ambush predator. Spends most of the day hiding in deep reef crevices, emerging at night to hunt.Social ActivitySocial structure: whether the species is solitary, paired, or colonial; hierarchy and communication. Multi-lang
Solitary behavior is common, rarely seen interacting with others of its species outside of mating.Feeding GuildWhat the species eats, how it forages or hunts, and its role as a consumer in the food web. Multi-lang
Nocturnal benthic carnivore.Trophic Chain DetailsSpecific interactions in local food webs: prey species, predators, competitors, and scavengers. Multi-lang
Feeds primarily on small benthic crustaceans and smaller reef fish.Reproductive BehaviourMating strategies, courtship displays, nesting or spawning behavior, and parental care. Multi-lang
Spawning occurs during warmer months; eggs are released into the water column and are pelagic.Physical Measures
Length (cm)
8.0 - 25.0 cm
Weight (Grams)
20 g - 300 g
Offspring per cycleTypical number of young (live births, eggs, or seeds) produced by one adult in a single reproductive event or breeding season.2000 - 10000
Sexual DimorphismObservable physical differences between males and females of the same species (e.g., size, coloration, features).No
Lifespan
Sexual MaturityAge at which the individual becomes capable of reproducing for the first time.
1 - 2 Years
Gestation / IncubationDuration from fertilization to birth (mammals) or to hatching (egg-laying species).
--
Lifespan EstimatedExpected duration of life from birth to natural death under wild conditions.
Males2 - 6 Years
Females2 - 6 Years
Evolutionary AdaptationsInherited traits and behaviors that improve the species' survival and reproduction in its specific environment. Multi-lang
Secretes a soapy toxin (grammistin) from its skin as a potent chemical defense mechanism to deter predators.
Main ThreatsDocumented pressures reducing the population: habitat loss, hunting, disease, climate change, and invasive species. Multi-lang
Generally low threat level, though sensitive to major coral reef degradation and pollution.
Interesting FactsSurprising or notable facts that highlight what makes this species unique or ecologically important. Multi-lang
The name 'soapfish' comes from the copious amount of thick, bubbly slime they produce when stressed or handled.