Table 1. Sample information for all species in the reported data set.

Order	Species	Tissue	Sample ID	Voucher ID
ZSCM numbers are vouchers from Zoological State Collection Munich
CFM numbers are vouchers from Chicago Field Museum collection
ZMUC number refers to voucher from Zoological Museum University of Copenhagen collection
KUI number refer to voucher from University of Kansas Biodiversity Institute Icthyology collection
UAIC number refers to voucher from University of Alabama Ichtyology collection
SAIAB number refers to voucher from South African Institute for Aquatic Biodiversity collection
MCZ number refer to voucher from Museum of Comparative Zoology, Harvard University collection
NSMT-P number refer to voucher from National Museum of Nature and Science, Tsukuba, Japan
1Kjartan Østbye (University of Oslo, Norway), 2Jan Yde Poulsen (Greenland Institute of Natural Resources, Greenland), 3Reinhold Hanel (Thünen-Institute of Fisheries Ecology, Germany), 4Masaki Miya (Natural History Museum & Institute in Chiba, Japan), 5Andrew Bentley (University of Kansas Biodiversity Institute, USA), 6Martin Malmstrøm (University of Oslo, Norway), 7Christophe Pampoulie (Marine Research Institute of Iceland, Iceland), 8Irvin Kilde (NorwegianUniversity of Science and Technology in Trondheim, Norway), 9Walter Salzburger (University of Basel, Switzerland), 10Ian Bradbury (Memorial university, Canada), 11Lukas Rüber (Natural History Museum in Bern, Switzerland), 12Fabio Cortesi (University of Queensland, Australia)
Osmeriformes	Osmerus eperlanus1	Fin*	Osep_1_#2	NA
Stomiatiformes	Borostomias antarcticus2	Muscle†	JYP 598	ZMUC 8046
Aulopiformes	Parasudis fraserbrunneri3	Muscle*	A430	CFM 117870
Ateleopodiformes	Guentherus altivela3	Muscle*	B375	NA
Myctophiformes	Benthosema glaciale2	Muscle†	JYP 403	ZMUC 8477
Polymyxiformes	Polymixia japonica4	Muscle*	NSMT-P 79586.1	NSMTNAP 79586
Percopsiformes	Percopsis transmontana5	Muscle*	KU:KUIT:1890	KU:KUI:29775
Percopsiformes	Typhlichthys subterraneus5	Muscle*	KU:KUIT:8754	UAIC 14148.01
Zeiformes	Zeus faber3	Muscle*	B11	ZSCM 32795
Zeiformes	Cyttopsis roseus3	Muscle†	B361	ZSCM 32479
Stylephoriformes	Stylephorus chordatus5	Muscle*	KU:KUIT:8138	MCZ 165920
Gadiformes	Bregmaceros cantori5	Muscle†	KU:KUIT:5133	KU:KUI:30244
Gadiformes	Merluccius polli3	Muscle†	B116	ZSCM 40336
Gadiformes	Merluccius merluccius6	Thymus*	Meme(Ly)_IOF_1_#2	NA
Gadiformes	Merluccius capensis3	Muscle†	B16	ZSCM 32773
Gadiformes	Melanonus zugmayeri3	Muscle*	B304	ZSCM 32519
Gadiformes	Muraenolepis marmoratus3	Muscle*	#95	NA
Gadiformes	Trachyrincus scabrus3	Muscle*	A35	CFM 117888
Gadiformes	Trachyrincus murrayi7	Fin*	A9-2012-420-171-1	NA
Gadiformes	Mora moro8	Muscle*	Momo(Dy)_Sula_4_#1	NA
Gadiformes	Laemonema laureysi3	Muscle†	B43	ZSCM 32710
Gadiformes	Bathygadus melanobranchus3	Muscle*	B365	ZSCM 40344
Gadiformes	Macrourus berglax6	Muscle*	Mabe_1_#1	NA
Gadiformes	Malacocephalus occidentalis3	Muscle*	A25	CFM 117884
Gadiformes	Phycis blennoides7	Fin*	A9-2012-418-76-1	NA
Gadiformes	Phycis phycis3	Muscle†	Phph_X5	NA
Gadiformes	Lota lota3	Muscle*	Lolo_X10	NA
Gadiformes	Molva molva6	Thymus*	Momo(Br)_IOF_1_#2	NA
Gadiformes	Brosme brosme6	Spleen*	Brbr_LO_1_#2	NA
Gadiformes	Trisopterus minutus6	Spleen†	Trmi_IOF_1_#1	NA
Gadiformes	Gadiculus argenteus6	Spleen†	Gaar_IOF_1_#2	NA
Gadiformes	Pollachius virens6	Spleen†	Povi_LO_1_#1	NA
Gadiformes	Melanogrammus aeglefinus6	Spleen†	Meae_LO_1_#2	NA
Gadiformes	Merlangius merlangus6	Thymus*	Meme(Hy)_OOF_1_#2	NA
Gadiformes	Arctogadus glacialis9	Fin†	0A-08-045_#3	NA
Gadiformes	Boreogadus saida7	Fin*	B3-2012-189-6_#1	NA
Gadiformes	Theragra chalcogramma10	Fin†	HS-08.010_#1	NA
Gadiformes	Gadus morhua6	Blood‡	NEAC_001	NA
Lampriformes	Regalecus glesne3	Muscle*	Regl_X3	NA
Lampriformes	Lampris guttatus3	Muscle*	Lagu_X8	NA
Beryciformes	Monocentris japonica4	Muscle*	NSMT-P 75883.1	NSMTNAP 75883
Holocentriformes	Myripristis jacobus3	Blood*	KV124	NA
Holocentriformes	Holocentrus rufus3	Blood†	X2	NA
Holocentriformes	Neoniphon sammara5	Muscle*	KU:KUIT:6925	SAIAB 77852
Beryciformes	Beryx splendens3	Muscle†	A252	NA
Beryciformes	Rondeletia loricata5	Muscle*	KU:KUIT:8426	MCZ 167869
Beryciformes	Acanthochaenus luetkenii5	Muscle†	KU:KUIT:8430	MCZ 167873
Ophidiiformes	Brotula barbata3	Muscle*	B392	ZSCM 32626
Ophidiiformes	Lamprogrammus exutus3	Muscle†	A69	CFM 118100
Ophidiiformes	Carapus acus3	Muscle†	B358	ZSCM 32503
Batrachoidiformes	Chatrabus melanurus3	Muscle†	B25	ZSCM 32594
Scombriformes	Thunnus albacares3	Muscle†	Sp569	NA
Gobiiformes	Lesueurigobius cf. sanzi3	Muscle*	B265	NA
Perciformes	Perca fluviatilis3	Muscle†	Pefl_NEG_1_#1	NA
Perciformes	Myoxocephalus scorpius3	Muscle*	Seescorpion_1	NA
Perciformes	Sebastes norvegicus6	Spleen†	Seno_LO_1_#1	NA
Perciformes	Chaenocephalus aceratus9	Muscle†	ANT-XXVII/3,#299	NA
Labriformes	Symphodus melops6	Muscle*	Kg47	NA
Spariformes	Spondyliosoma cantharus3	Muscle*	Sp28	NA
Lophiiformes	Antennarius striatus3	Muscle†	B133	ZSCM 32591
Carangiformes	Selene dorsalis3	Muscle†	B97	NA
Anabantiformes	Helostoma temminckii11	Muscle*	LR10256	NA
Anabantiformes	Anabas testudineus11	Muscle†	LR11643	NA
Blenniiformes	Parablennius parvicornis11	Muscle*	LR00424	NA
Ovalentariae incertae sedis	Chromis chromis3	Muscle*	Sp51	NA
Ovalentariae incertae sedis	Pseudochromis fuscus12	Muscle*	F5-C4_1	NA

*Isolated with EZNA spin columns

^†Isolated with high salt method

^‡Isolated with blood plug protocol (See Star et al.)8