Thornback ray (Raja clavata) in divisions 8.a-b and 8.d (Bay of Biscay)

StockCode (Assessment Component)

rjc.27.8abd

Assessment Year

2026

Stock Category

2.11

Purpose

Advice

Published

Stock Assessment Key

25854

Link to Advice Sheet

Status: Valid

Advice Component

Advice Category*

Advice Type*

Advice Unit*

AdviceValue*

Advice Value Lower Range

Advice Value Upper Range

Wanted Catch

Wanted Catch Lower Range

Wanted Catch Upper Range

Advice Sentence*

Advice Released Date*

Advice Applicable From*

Advice Applicable Until*

TAF Link

Management Alignment

MP WebLink

Management Plan Ownership

Link To Evaluation

Inquiries or Comments?

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Catch scenarios

Basis	Total catch	Fishing mortality F/FMSY	Stock size B/BMSY	% Biomass change *	% Advice change **	Probability of B below Blim
	2028	2028	2029	2029	2028	2029
	(t)	(ratio)	(ratio)	(%)	(%)	(%)
ICES Basis Advice
Maximum sustainable yield (MSY) approach (15th percentile of predicted catch distribution under F = FMSY)	285	0.51	0.97	4.1	1.3	0.01
Other scenarios
F = FMSY	561	1	0.94	0.28	99	0.01
F = F2026	548	0.98	0.94	0.46	95	0.01
F = 0	0	0	1.01	8.1	-100	0.01
Catch = 35th percentile of predicted catch distribution under F=FMSY	444	0.79	0.95	1.91	58	0.01

Symbol	Footnotes
*	Biomass 2029 relative to biomass 2028 at the beginning of the year (0.93).
**	Advice value for 2028 relative to catch advice value for 2027 (282 tonnes).