Rules at a glance
- Free fishing
- Fly only
- Barbless
Water temperature for Chub
Ideal15.1°Cideal 14–22°C
0°14°28°
How to fish it · for Chub
When
March–October
Where
The only genuine coastal-basin salmonid fishery in Slovenia, and the pack's sole entry into the Istrian karst thermal regime — a resurgence stream near Koper…
Why this works
Chub: comfort conditions look perfect. Clarity clearing — accounted for via spook-risk.
Likely species
Mayflies
Mayflies- Anglers curse mayfliesMost likelyLower confidence#20–22 · SpinnerGo tiny: 20-22 spent spinner, single fly, long tippet.
- Large dark oliveAlso possible#14–16 · EmergerDead-drift the emerger — it's sitting in the film.
- Blue-winged oliveAlso possible#16–18 · DunDuns are up; a sherry spinner fall may follow.
Caddisflies
Caddisflies- Satin sedgeMost likelyLower confidence#12–14 · Egg-layingSkitter it at dusk — this one's fished, not dead-drifted.
- GrannomAlso possible#14–16 · PupaPupa first, then dries as the adults come off.
- Net-spinning caddis (S. Europe)Also possibleLower confidence#12–14–16 · PupaWidespread riffle net-spinner; evening emergence.
Hatch timeline · todayQuiet day
Hatch predictions
Today's headline hatch shown — see all 6 active hatches hour by hour with Pro.
Start free trial14-day free trial. Cancel anytime.
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 3 guilds with Pro.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey
Hatch predictions
Top prey shown — see all 3 with Pro.
Start free trial14-day free trial. Cancel anytime.
Evidence
ModelledModerate confidence
Modelled from regional ecology — no survey or occurrence data for this water yet.
Through the year
0–3 scale · August highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
1
Brown SedgeHatch
2
3
2
Freshwater ShrimpHatch
2
3
3
3
3
3
3
3
3
3
3
2
Blue Winged OliveHatch
2
3
3
3
3
2
Mayfly (Green Drake)Hatch
2
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Chub fly box
Hook 8–10 weighted · Fly
in season · matches water height
Permits & access
Permit required — see local rules.
- RD Koper
- Fly-only, barbless.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 2
Rižana River, Rižana, Slovenia Terrain map
The full read · show the working · for Chub · confidence 65%
Perfect · warmwater comfort — temperature and clarity led
Water temperatureWater temp 15.1°C — prime band for chub.
FlowStable flow — predictable holding lies.
SeasonPrime month for this species.
Water clarityClarity clearing — accounted for via spook-risk.
Can you trust it?
Water temperaturelive gauge readinggauge
Level / flowon-river gaugeobserved
Directions
Seasons & zones
- Trout 1 March → 30 September
- Marble trout 1 April → 31 October
Related guides
Booking & contacts
Rižana
Water temperature for Chub
Ideal15.1°Cideal 14–22°C
0°14°28°
How to fish it · for Chub
When
March–October
Where
The only genuine coastal-basin salmonid fishery in Slovenia, and the pack's sole entry into the Istrian karst thermal regime — a resurgence stream near Koper…
Why this works
Chub: comfort conditions look perfect. Clarity clearing — accounted for via spook-risk.
Likely species
Mayflies
- Anglers curse mayfliesMost likelyLower confidence#20–22 · SpinnerGo tiny: 20-22 spent spinner, single fly, long tippet.
- Large dark oliveAlso possible#14–16 · EmergerDead-drift the emerger — it's sitting in the film.
- Blue-winged oliveAlso possible#16–18 · DunDuns are up; a sherry spinner fall may follow.
Caddisflies
- Satin sedgeMost likelyLower confidence#12–14 · Egg-layingSkitter it at dusk — this one's fished, not dead-drifted.
- GrannomAlso possible#14–16 · PupaPupa first, then dries as the adults come off.
- Net-spinning caddis (S. Europe)Also possibleLower confidence#12–14–16 · PupaWidespread riffle net-spinner; evening emergence.
Hatch timeline · todayQuiet day
Hatch predictions
Today's headline hatch shown — see all 6 active hatches hour by hour with Pro.
Start free trial14-day free trial. Cancel anytime.
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 3 guilds with Pro.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey
Hatch predictions
Top prey shown — see all 3 with Pro.
Start free trial14-day free trial. Cancel anytime.
Evidence
ModelledModerate confidence
Modelled from regional ecology — no survey or occurrence data for this water yet.
Through the year
0–3 scale · August highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
1
Brown SedgeHatch
2
3
2
Freshwater ShrimpHatch
2
3
3
3
3
3
3
3
3
3
3
2
Blue Winged OliveHatch
2
3
3
3
3
2
Mayfly (Green Drake)Hatch
2
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Chub fly box
Hook 8–10 weighted · Fly
in season · matches water height
Permits & access
Permit required — see local rules.
- RD Koper
- Fly-only, barbless.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 2
Rižana River, Rižana, Slovenia Terrain map
The full read · show the working · for Chub · confidence 65%
Perfect · warmwater comfort — temperature and clarity led
Water temperatureWater temp 15.1°C — prime band for chub.
FlowStable flow — predictable holding lies.
SeasonPrime month for this species.
Water clarityClarity clearing — accounted for via spook-risk.
Can you trust it?
Water temperaturelive gauge readinggauge
Level / flowon-river gaugeobserved
Directions
Seasons & zones
- Trout 1 March → 30 September
- Marble trout 1 April → 31 October
Related guides
Booking & contacts