Offshore fish identification cards for small-scale fishermen

Transcription

1 Offshore fish identification cards for small-scale fishermen

2 Secretariat of the Pacific Community, 2013 These identification cards are produced by the Secretariat of the Pacific Community (SPC) to help improve catch data and statistics from small-scale vessels that regularly target pelagic species. With a better understanding of small-scale vessel catches, regional fisheries managers can ensure that migratory stocks are better managed throughout the range of the stocks and that small-scale fishers get more recognition and support for their contribution to food security and employment at the local community level. The most likely users of these cards are small-scale fishers who actively target pelagic stocks, along with fishery officers who are tasked with monitoring these fisheries. Fisheries training institutions and fishing communities are other potential users. Printing of these cards was made possible through financial assistance provided by AusAID. Project co-ordination done by the Oceanic Fisheries Programme Fisheries Monitoring Section and the Fisheries Information Section, SPC. Colour illustrations by Jipé Le-Bars (juvenile tunas), Hazel Adams (bullet tuna, frigate tuna and rough triggerfish), Rachel O Shea (yellowtail amberjack) and Les Hata (all others); black and white illustrations courtesy of the Food and Agriculture Organization of the United Nations (FAO). This publication is based on the Marine species identification manual for horizontal longline fishermen by Chapman et al. (2006). Secretariat of the Pacific Community Cataloguing-in-publication data Offshore fish identification cards for small-scale fishermen / produced by the Secretariat of the Pacific Community 1. Marine fishes Classification Oceania 2. Fishery management Oceania I. Title II. Secretariat of the Pacific Community AACR2 ISBN:

3 Tunas First dorsal fin Second dorsal fin Base of second dorsal fin Finlets Caudal fin Caudal keel Pelvic fin Pectoral fin Anal fin Base of anal fin Tunas

4 Tunas Yellowfin tuna Thunnus albacares Adults (>70 cm) Narrow body, especially near caudal fin YFT Second dorsal and anal fins very long and yellow Finlets yellow with no black edge Notch in caudal fin

5 Bigeye tuna Thunnus obesus Adults (>70 cm) Stout body BET Finlets bright yellow with black edge No notch in caudal fin Tunas

6 Tunas Yellowfin tuna Thunnus albacares Juveniles (40 70 cm) Narrow body, especially near caudal fin Small notch in caudal fin YFT Pectoral fin tip rounded Pectoral fin reaches base of second dorsal fin Lines slightly curved, evenly spaced, separated by lines of spots over most of body

7 Bigeye tuna Thunnus obesus Juveniles (40 70 cm) Stout body No notch in caudal fin BET Pectoral fin tip pointed Pectoral fin often extends beyond base of second dorsal fin Lines almost straight, unevenly spaced with a few erratic spots mostly over lower body Tunas

8 Tunas Albacore tuna Thunnus alalunga Back edge of caudal fin white or colourless ALB Pectoral fin reaches way past base of second dorsal and anal fins

9 Longtail tuna Thunnus tonggol Second dorsal fin taller than first dorsal fin Body slender, especially towards caudal fin LOT Pectoral fin rarely reaches space between dorsal fins Faint rows of colourless spots along belly Tunas

10 Tunas Bullet tuna Auxis rochei rochei Wide space between first and second dorsal fins BLT Pectoral fin tip does not reach front edge of patterned area

11 Frigate tuna Auxis thazard thazard Wide space between first and second dorsal fins FRI Pectoral fin tip reaches beyond front edge of patterned area Tunas

12 Tunas Skipjack tuna Katsuwonus pelamis SKJ Three to five stripes along belly

13 Kawakawa Euthynnus affinis Narrow space between first and second dorsal fins KAW Black spots, sometimes faded Tunas

14 Tunas Dogtooth tuna Gymnosarda unicolor Obvious wavy lateral line DOT Cone-shaped (dog-like) teeth in a large mouth

15 Butterfly kingfish Gasterochisma melampus BUK Body covered in large shiny scales Tunas

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17 Billfish Upper jaw prolonged (bill) First dorsal fin Second dorsal fin Caudal fi n Pectoral fin Pelvic fin First anal fin Second anal fin Caudal keels Billfish

18 Billfish Blue marlin Makaira nigricans (a) Dorsal fin height (a) half to three-quarters of greatest body depth (b) (b) BUM Pectoral fin not rigid can flatten against body

19 Striped marlin Tetrapturus audax (a) Dorsal fin height (a) higher than or sometimes equal to greatest body depth (b) (b) MLS Pectoral fin not rigid can flatten against body Billfish

20 Billfish Swordfish Xiphias gladius Sword-like bill with smooth surface First and second dorsal fins widely separated (except if <100 cm) SWO No pelvic fins Only one caudal keel

21 Black marlin Makaira indica (a) Dorsal fin height (a) about half of greatest body depth (b) (b) BLM Pectoral fin rigid cannot flatten against body on fish over 40 kg Billfish

22 Billfish Shortbill spearfish Tetrapturus angustirostris Dorsal fin about same height as body depth (a) (b) Bill length (a) very short, equal to or shorter than head length (b) SSP

23 Sailfish Istiophorus platypterus Dorsal fin very tall (more than two times body depth) SFA Billfish

24 Jacks Jacks Lateral line First dorsal fin Second dorsal fin Scutes Caudal fin Operculum Pectoral fin Pelvic fin Anal fin

25 Giant trevally Caranx ignobilis Head profile steep and straight at eye level Body covered with numerous very small black dots NXI Jacks

26 Jacks Rainbow runner Elagatis bipinnulata Blue and yellow stripes on side Caudal fin dark in colour and deeply forked RRU Two-rayed finlet behind second dorsal and anal fins

27 Yellowtail amberjack Seriola lalandi Single yellow stripe on side No finlet YTC Pectoral fin shorter than pelvic fin Second dorsal, anal and caudal fins yellow Jacks

28 Jacks Bigeye scad Selar crumenophthalmus Dorsal fins close together Very large eye BIS Black spot on operculum Maximum length: 50 cm

29 Mackerel scad Decapterus macarellus Dorsal fins widely separated Black blotch on operculum MSD Maximum length: 40 cm Jacks

30 Jacks Jacks (other) Carangidae Uraspis spp. Carangoides spp. Caranx spp. Selar spp. Decapterus spp. Trachinotus spp. Scomberoides spp. Seriola spp. TRE Note: The Carangidae family (jacks) includes 32 genera and about 140 species of highly varied shapes. Jacks are open-water carnivorous fish, usually silvery in colour.

31 Other important species Head First dorsal fin Second dorsal fin Finlets Snout Caudal fin Operculum (gill cover) Pelvic fin Pectoral fin Lateral line Anal fin Caudal keel Other important species

32 Other important species Wahoo Acanthocybium solandri Snout as long as rest of head Snout Rest of head Lateral line dips under first dorsal fin WAH

33 Spanish mackerel Scomberomorus commerson Snout shorter than rest of head Snout Rest of head Lateral line dips after first dorsal fin COM Other important species

34 Other important species Pickhandle barracuda Sphyraena jello Second dorsal and caudal fins yellowish Bars are faint, unevenly spaced and go to just below lateral line BAC

35 Blackfin barracuda Sphyraena qenie Second dorsal, anal and caudal fins black BAB Bars go well below lateral line Two small knobs at centre of caudal fin Other important species

36 Other important species Great barracuda Sphyraena barracuda Second dorsal, anal and caudal fins dark with white tips Black spots (normally) Distinctive shaped caudal fin GBA

37 Mahi mahi Coryphaena hippurus Distinct body shape and colour DOL Male head shape Female head shape Other important species

38 Other important species Sickle pomfret Taractichthys steindachneri Obviously long first dorsal and anal fins White margin on caudal fin TST Large scales

39 Pomfrets (other) Bramidae Species in this family have: Angle of jaw very slanted Single dorsal fin Caudal fin of adults strongly forked Pteraclis spp. Pterycombus spp. BRZ Taractes spp. Brama spp. Other important species

40 Other important species Slender sunfish Ranzania laevis Slender body shape No protruding tail Distinct markings RZV Maximum length: 80 cm

41 Rough triggerfish Canthidermis maculatus Dark body and fins covered with numerous whitish blotches CNT Other important species

42 Other important species Flyingfish Exocoetidae Cypselurus spp. Cheilopogon spp. Species in this family have: Long wing-like pectoral fins, high on side, always extending beyond origin of dorsal fin No spines in fins Hirundichthys spp. Exocoetus sp. FLY Parexocoetus spp. Prognichthys spp.

43 Gemfish & snake mackerels Gempylidae Rexea spp. Species in this family have: Large mouth with strong teeth Two dorsal fins, second shorter than first Pelvic fin very small, often just a single spine with a few or no soft rays Rexichthys spp. GEP Other important species

44 SECRETARIAT OF THE PACIFIC COMMUNITY BP D NOUMEA CEDEX NEW CALEDONIA Telephone: Facsimile: Prepared for publication at: Secretariat of the Pacific Community headquarters, Noumea, New Caledonia, 2013 Printed by: Stredder Print Ltd., New Zealand