mediterranean rainbow wrasse
Coris julis · Labridae · predator
Colorful wrasse of the eastern Atlantic and the Mediterranean. It is not known from the South American coast, although Argentina and Uruguay are listed among the species' countries. It has records from recreational fishing.
Also called: bodião-arco-íris, doncella, julia, mediterranean rainbow wrasse
- maximum
- 30 cm
- depth
- 1–60 m
the right time
to be on the water
Choose the place and the species. The index, from 0 to 100, combines weather, sun, moon and tide with each fish's habits. Up to 28 days, with each day's confidence.
Reading the weather across 3 global models and 31 simulations…
—
hour by hour
slide your finger or mouse over the chart to see each hoursee hour-by-hour table
why this index at —?
choose the day
Each card shows the day's index (0 to 100) and, below it, a strip with the index for each hour, from 0h to 23h. from poor to excellent.
the fishing month at a glance
what's the best window for the crew?
Choose how many fishing days. We compare each stretch by its average index, discount days with a warning or closed season, and show the 3 best.
trend for the coming weeks
Line: the middle value of 31 simulations of the American GEFS model. Band: where 8 out of 10 fall. Narrow, firm trend; wide, high uncertainty.
everything about the mediterranean rainbow wrasse
who is the mediterranean rainbow wrasse
Wrasse of the family Labridae, with an elongated body and bright colors, living near rocks and seagrass meadows in the eastern Atlantic and the Mediterranean, from Sweden to Gabon. It is not known from South America, although Argentina and Uruguay appear on the list of countries. It reaches 30 cm and lives mostly between 1 and 60 m deep, deeper in winter. It feeds on small snails, sea urchins, shrimp, worms, isopods and amphipods, and sometimes buries itself in sand at night or when frightened. It has records from recreational fishing and a small commercial fishery, and is sold for aquariums.
Essential profile. Identification, where it occurs and rules, with data from FishBase and the cited regulations. Season, time of day, technique and bait are added once we have a good source for the mediterranean rainbow wrasse.
fun facts
- Females change into males, and all specimens over 18 cm are males.
identification
Males have the front of the dorsal fin elongated, with an orange and black spot, and an orange or red zigzag stripe on the flanks. Females and juveniles have a broad pale band along the flanks and a dark zigzag stripe in the middle of the body. The head has no scales, nor do the bases of the dorsal and anal fins.
where found
The species lives in the eastern Atlantic and the Mediterranean, from Sweden to Gabon, and is not known from South America. Argentina and Uruguay are on the list of countries of occurrence, but fall outside the described range.
Habitat: Coastal zone, near rocks and seagrass meadows, 1 to 60 m deep.
rules for the mediterranean rainbow wrasse
Summary of the regulations we found, with the source for each. Rules change; before keeping or transporting fish, check with the state environmental agency.
We found no species-specific rule beyond the region's general rules.
catch and release
catch and release Releasing the fish alive, quickly and with a wet hand. During a closed season it isn't always allowed: what the regulation says applies.
It has spines in its fins, but it is not dangerous to anglers. Handle it with wet hands so as not to remove the mucus from its skin.
how much it weighs without taking it out of the water
Length-weight relationship W = a·Lb (a = 0.00851, b = 3.06; FishBase (relação peso-comprimento bayesiana, estimativa da própria espécie)). It's an average: a fat or lean fish can vary by 10% to 20%.
estimated weight
—
sources and references
Essential profile: size, length-weight, depth, countries and conservation come from FishBase and the cited regulations, and the texts were written from those sources. Season, time of day, sensitivities, technique and baits and lures are not included yet, because we did not find a good source for this species.
- scientific FishBase: Coris julis (ficha da espécie)Size, length-weight, depth, habitat, distribution, biology, and IUCN status. Page checked on Oct 13, 2026.
- scientific FishBase: nomes populares de Coris julisNames by country and language.
where each number comes from
The weather comes from three independent global models, cross-checked hour by hour: when they agree, confidence goes up; when they diverge, the band between them shows on the chart. Beyond 16 days, we use the GEFS ensemble of 31 simulations: if 20 of the 31 predict rain, the chance of rain is 65%. Sun and moon are calculated astronomically, with no uncertainty.
The index adds up, weighted for each species: time of day (species curve anchored to real sunrise and sunset), moon (transits, rise and set, phase), pressure (3 h trend and 24 h swing), water temperature (in rivers, estimated from air temperature; at sea, estimated by an ocean model), wind, rain, clouds, tide and the month in the species' cycle.
sources for this lookup
how accurate the forecast is
Accuracy measured in the reference project (4 regions, 93 days, forecast vs. observed): maximum temperature is off by 0.6 °C on average the next day and 1.7 °C at 7 days; rain of 5 mm or more is detected 76% of the time the next day and 57% at 7 days. Detection isn't everything: the false alarm rate isn't published here yet, and 93 days in 4 regions is still a small sample. We now also measure every day, at the app's destinations: