This level is for aquarists who are considering their first saltwater aquarium or have just recently started in the hobby should begin with beginner level fishes and invertebrates. The fish below are all beginner level.
Angelfishes
Basses (including Anthias, Groupers, & Hamlets)
Basslets, Spiny Basslets, & Grammas
Blennies and Blennylike Fishes
Boxfishes, Puffers, and Triggerfishes
Cardinalfishes
Damselfishes (including Clownfishes)
Abudefduf saxatilis
Amblyglyphidodon aureus
Amphiprion clarkii
Amphiprion frenatus
Amphiprion melanopus
Amphiprion ocellaris
Chromis analis
Chromis margaritifer
Chromis retrofasciata
Chromis vanderbilti
Chromis viridis
Chrysiptera cyanea
Chrysiptera hemicyanea
Dartfishes
Dottybacks & Pseudochromis
Congrogadus subduscens
Cypho purpurascens
Labracinus cyclophthalmus
Pseudochromis aldabraensis
Pseudochromis cyanotaenia
Pseudochromis diadema
Eels
Gobies
Amblyeleotris diagonalis
Amblyeleotris guttata
Amblyeleotris randalli
Amblyeleotris steinitzi
Amblyeleotris wheeleri
Amblygobius decussatus
Amblygobius phalaena
Amblygobius semicinctus
Coryphopterus glaucofraenum
Hawkfishes
Lionfishes
Squirrelfishes, Soldierfishes, Bigeyes, & Catalufas
Tangs & Surgeonfishes
Wrasses, Hogfishes, & Tuskfishes
Bodianus masudai
Bodianus rufus
Cirrhilabrus cyanopleura
Cirrhilabrus exquisitus
Cirrhilabrus filamentosus
Cirrhilabrus lubbocki
This level is for those who have successfully reached the 6-month to 1-year mark and may start attempting to introduce some intermediate level fishes, beginner and intermediate level corals, and other intermediate level invertebrates into their tank. The fish below are all intermediate level.
Angelfishes
Apolemichthys griffisi
Apolemichthys trimaculatus
Apolemichthys xanthopunctatus
Centropyge bicolor
Centropyge fisheri
Centropyge flavissima
Centropyge heraldi
Centropyge interruptus
Centropyge multicolor
Centropyge multispinis
Centropyge nox
Centropyge tibicen
Chaetodontoplus caeruleopunctatus
Chaetodontoplus duboulayi
Chaetodontoplus melanosoma
Chaetodontoplus meridithi
Chaetodontoplus mesoleucus
Chaetodontoplus septentrionalis
Genicanthus bellus
Genicanthus caudovittatus
Genicanthus lamarck
Genicanthus melanospilos
Genicanthus semifasciatus
Genicanthus watanabei
Holacanthus bermudensis
Holacanthus ciliaris
Anglerfish & Frogfish
Basses (including Anthias, Groupers, & Hamlets)
Cephalopholis argus
Cephalopholis formosa
Cephalopholis fulva
Cephalopholis miniata
Cephalopholis polleni
Cephalopholis urodeta
Chromileptes altivelis
Epinephelus flavocaeruleus
Epinephelus summana
Mycteroperca rosacea
Chromileptes altivelis
Blennies & Blennylike Fishes
Acanthemblemaria spp.
Ecsenius bimaculatus
Ecsenius gravieri
Ecsenius namiyei
Entomacrodus marmoratus
Istiblennius chrysospilos
Boxfishes, Puffers, & Triggerfishes
Arothron diadematus
Arothron hispidus
Arothron immaculatus
Arothron manilensis
Arothron mappa
Arothron meleagris
Arothron nigropunctatus
Butterflyfishes
Chaetodon argentatus
Chaetodon burgessi
Chaetodon collare
Chaetodon declivis
Chaetodon ephippium
Chaetodon falcula
Chaetodon fasciatus
Chaetodon fremblii
Chaetodon guttatissimus
Chaetodon humeralis
Chaetodon lineolatus
Chaetodon melannotus
Chaetodon mertensii
Chaetodon mesoleucos
Damselfishes (including Clownfishes)
Amphiprion akallopisos
Amphiprion akindynos
Amphiprion allardi
Amphiprion chrysopterus
Amphiprion ephippium
Amphiprion leucokranos
Eels
Filefishes
Gobies
Amblygobius rainfordi
Ctenogobiops tangaroai
Discordipinna griessingeri
Elacatinus horsti
Elacatinus puncticulatus
Lionfishes
Rabbitfishes
Snappers & Fusiliers
Squirrelfishes, Soldierfishes, Bigeyes, & Catalufas
Tangs & Surgeonfishes
Acanthurus bariene
Acanthurus chirurgus
Acanthurus coeruleus
Acanthurus dussumieri
Acanthurus fowleri
Acanthurus guttatus
Acanthurus japonicus
Acanthurus leucocheilus
Acanthurus leucosternon
Acanthurus maculiceps
Acanthurus mata
Acanthurus monroviae
Wrasses, Hogfishes, & Tuskfishes
Bodianus anthioides
Bodianus axillaris
Bodianus bilunulatus
Bodianus bimaculatus
Bodianus diana
Bodianus loxozonus
Bodianus mesothorax
Bodianus opercularis
Bodianus pulchellus
Cheilinus lunulatus
Cirrhilabrus aurantidorsali
Cirrhilabrus balteatus
Cirrhilabrus bathyphilus
Cirrhilabrus condei
Cirrhilabrus flavidorsalis
Cirrhilabrus jordani
Cirrhilabrus laboutei
Cirrhilabrus linneatus
Cirrhilabrus luteovittatus
Cirrhilabrus punctatus
Cirrhilabrus pylei
Cirrhilabrus rhomboidalis
Cirrhilabrus rubrimarginatus
Cirrhilabrus scottorum
Cirrhilabrus temminckii
Cirrhilabrus tonozukai
Clepticus parrae
Coris aygula
Coris formosa
Coris gaimard
Halichoeres chloropterus
Halichoeres chrysus
Halichoeres garnoti
Halichoeres hortulanus
Halichoeres iridis
Halichoeres melanurus
Halichoeres ornatissimus
Halichoeres radiatus
Halichoeres trispilus
Novaculichthys macrolepidotus
Novaculichthys taeniourus
Paracheilinus carpenteri
Paracheilinus filamentosus
Paracheilinus mccoskeri
Paracheilinus octotaenia
Thalassoma bifasciatum
Thalassoma hardwicke
Thalassoma jansenii
Thalassoma lucasanum
Thalassoma rueppellii
This level is for those who are dedicated, knowledgeable, and prepared to meet all the expert-only animal's husbandry needs. Even with years of experience, expert level animals can be difficult to wean onto a captive diet and may require many feedings per day, specialized feedings, or very specific environmental conditions. The fish below are all expert-level.

Apolemichthys xanthurus
Centropyge acanthops
Centropyge argi
Centropyge aurantonotus
Centropyge bispinosa
Centropyge eibli
Centropyge loricula
Centropyge vrolikii
Pomacanthus maculosus
Hypoplectrus gemma
Hypoplectrus guttavarius
Hypoplectrus indigo
Hypoplectrus nigricans
Hypoplectrus puella
Hypoplectrus unicolor
Plectropomus laevis
Variola louti
Assessor flavissimus
Assessor macneilli
Calloplesiops altivelis
Gramma loreto
Liopropoma rubre
Liopropoma swalesi
Serranus baldwini
Serranus tabacarius
Serranus tigrinus
Serranus tortugarum
Crossosalarias macrospilus
Ecsenius bicolor
Ecsenius lineatus
Ecsenius lividanalis
Ecsenius melarchus
Ecsenius midas
Ecsenius stigmatura
Pholidichthys leucotaenia
Salarias fasciatus
Salarias ramosus
Salarias segmentatus
Abalistes stellaris
Melichthys niger
Melichthys vidua
Odonus niger
Pseudobalistes fuscus
Rhinecanthus aculeatus
Rhinecanthus assasi
Rhinecanthus rectangulus
Rhinecanthus verrucosus
Sufflamen albicaudatum
Sufflamen bursa
Sufflamen chrysopterum
Xanthichthys mento
Chaetodon auriga
Chaetodon kleinii
Chaetodon lunula
Heniochus acuminatus
Apogon cyanosoma
Apogon leptacanthus
Apogon maculatus
Apogon novemfasciatus
Pterapogon kauderni
Apogon nematoptera
Pterapogon orbicularis
Chrysiptera parasema
Chrysiptera rollandi
Chrysiptera springeri
Chrysiptera starcki
Chrysiptera talboti
Chrysiptera taupou
Chrysiptera tricincta
Dascyllus albisella
Dascyllus aruanus
Dascyllus marginatus
Dascyllus melanurus
Dascyllus reticulatus
Dascyllus trimaculatus
Microspathodon chrysurus
Neoglyphidodon melas
Neoglyphidodon nigroris
Neoglyphidodon oxyodo
Plectroglyphidodon lacrymatus
Pomacentrus alleni
Pomacentrus auriventris
Pomacentrus bankanensis
Pomacentrus coelestis
Pomacentrus moluccensis
Pomacentrus smithi
Pomacentrus vaiuli
Nemateleotris decora
Nemateleotris magnifica
Parioglossus raoi
Ptereleotris evides
Ptereleotris heteroptera
Ptereleotris zebra
Congrogadus dilectus
Cypho elongatus
Pseudochromis flavivertex
Pseudochromis fuscus
Pseudochromis paccagnellae
Congrogadus polynemus
Cypho porphyreus
Pseudochromis splendens
Pseudochromis springeri
Pseudochromis veliferus
Echidna nebulosa
Gymnomuraena zebra
Gymnothorax favagineus
Gymnothorax fimbriatus
Gymnothorax kidako
Gymnothorax melatremus
Gymnothorax meleagris
Gymnothorax miliaris
Cantherhines dumerilii
Chaetodermis pencilligerus
Pervagor spilosoma
Coryphopterus personatus
Cryptocentrus aurora
Cryptocentrus cinctus
Cryptocentrus leptocephalus
Cryptocentrus pavoninoides
Elacatinus multifasciatus
Gobiodon ceramensis
Gobiodon cetrinus
Gobiodon histrio
Gobiodon okinawae
Gobiosoma evelynae
Gobiosoma oceanops
Trimma cana
Valenciennea helsdingenii
Valenciennea longipinnis
Valenciennea puellaris
Valenciennea wardii
Amblycirrhitus pinos
Cirrhitichthys aprinus
Cirrhitichthys falco
Cirrhitichthys oxycephalus
Cyprinocirrhites polyactis
Neocirrhites armatus
Oxycirrhites typus
Paracirrhites arcatus
Paracirrhites forsteri
Pterois volitans
Siganus virgatus
Siganus vulpinus
Myripristis jacobus
Myripristis vittata
Myripristis tiere
Acanthurus blochii
Ctenochaetus binotatus
Ctenochaetus strigosus
Ctenochaetus tominiensis
Zebrasoma flavescens
Zebrasoma scopas
Zebrasoma veliferum
Cirrhilabrus rubripinnis
Cirrhilabrus rubrisquamis
Cirrhilabrus rubriventralis
Cirrhilabrus solorensis
Gomphosus varius
Halichoeres bivittatus
Thalassoma hebraicum
Thalassoma lunare
Thalassoma lutescens
Thalassoma purpureum
Thalassoma quinquevittatum
Wetmorella nigropinnata
Holacanthus passer
Pomacanthus annularis
Pomacanthus arcuatus
Pomacanthus asfur
Pomacanthus chrysurus
Pomacanthus imperator
Pomacanthus navarchus
Pomacanthus paru
Pomacanthus semicirculatus
Pomacanthus sexstriatus
Pomacanthus xanthometopon
Pomacanthus zonipectus
Antennarius commerson
Antennarius maculatus
Antennarius striatus
Histrio histrio
Paranthias furcifer
Plectranthias inermis
Pseudanthias bartlettorum
Pseudanthias bicolor
Pseudanthias cooperi
Pseudanthias dispar
Pseudanthias fasciatus
Pseudanthias huchtii
Pseudanthias kashiwae
Pseudanthias lori
Pseudanthias parvirostris
Pseudanthias pictilis
Pseudanthias pleurotaenia
Pseudanthias pulcherrimus
Pseudanthias randalli
Pseudanthias rubrizonatus
Pseudanthias squamipinnis
Pseudanthias truncatus
Serranocirrhitus latus
Variola albimarginata
Gramma brasiliensis
Gramma melacara
Platax orbicularis
Platax teira
Meiacanthus atrodorsalis
Meiacanthus grammistes
Meiacanthus mossambicus
Meiacanthus nigrolineatus
Meiacanthus oualenensis
Meiacanthus smithi
Meiacanthus tongaensis
Ophioblennius atlanticus
Parablennius marmoreus
Parapercis schauislandii
Arothron stellatus
Balistapus undulatus
Balistes punctatus
Balistes vetula
Balistoides conspicillum
Canthigaster bennetti
Canthigaster coronata
Canthigaster epilampra
Canthigaster jactator
Canthigaster valentini
Diodon holocanthus
Xanthichthys auromarginatus
Xanthichthys caeruleolineatus
Xanthichthys ringens
Chaetodon miliaris
Chaetodon mitratus
Chaetodon nippon
Chaetodon paucifasciatus
Chaetodon pelewensis
Chaetodon punctatofasciatus
Chaetodon rafflesii
Chaetodon semilarvatus
Chaetodon tinkeri
Chaetodon trichrous
Chaetodon ulietensis
Chaetodon unimaculatus
Chaetodon vagabundus
Chaetodon wiebeli
Chaetodon xanthurus
Chelmon marginalis
Chelmon muelleri
Chelmon rostratus
Coradion altivelis
Forcipiger flavissimus
Forcipiger longirostris
Hemitaurichthys polylepis
Hemitaurichthys zoster
Heniochus intermedius
Heniochus singularius
Heniochus varius
Prognathodes aculeatus
Amphiprion ocellaris (Black and White)
Amphiprion perideraion
Amphiprion polymnus
Amphiprion sandaracinos
Amphiprion sebae
Chromis cyanea
Chromis nitida
Chromis scotti
Chrysiptera galba
Hypsypops rubicunda
Premnas biaculeatus
Gunnelichthys curiosus
Nemateleotris helfrichi
Echidna polyzona
Enchelycore pardalis
Gymnothorax funebris
Gymnothorax nudivomer
Myrichthys maculosus
Taenioconger hassi
Meuschenia hippocrepis
Paraluteres prionurus
Paramonacanthus japonicus
Pervagor melanocephalus
Parupeneus cyclostomus
Parupeneus barberinoides
Parupeneus multifasciatus
Lythrypnus dalli
Lythrypnus zebra
Paragobiodon lacunicolus
Priolepsis nocturna
Signigobius biocellatus
Stonogobiops nematodes
Stonogobiops yashia
Valenciennea sexguttata
Valenciennea strigata
Plectorhinchus albovittatus
Plectorhinchus diagrammus
Opistognathus rosenblatti
Opistognathus aurifrons
Dendrochirus biocellatus
Dendrochirus brachypterus
Dendrochirus zebra
Pterois antennata
Pterois radiata
Siganus corallinus
Siganus doliatus
Siganus guttatus
Siganus magnificus
Siganus puellus
Siganus punctatus
Siganus spinus
Siganus unimaculatus
Siganus uspi
Hippocampus abdominalis
Hippocampus kuda
Caesio xanthonota
Heteropriacanthus cruentatu
Sargocentron xantherythrum
Acanthurus nigricans
Acanthurus nigrofuscus
Acanthurus nigroris
Acanthurus olivaceous
Acanthurus pyroferus
Acanthurus sohal
Acanthurus tennentii
Acanthurus thompsoni
Acanthurus triostegus
Acanthurus tristis
Ctenochaetus hawaiiensis
Ctenochaetus truncatus
Naso brevirostris
Naso elegans
Naso literatus
Naso unicornis
Naso vlamingii
Paracanthurus hepatus
Zebrasoma desjardinii
Zebrasoma gemmatum
Zebrasoma rostratum
Zebrasoma xanthururm
Hoplolatilus purpureus
Hoplolatilus starcki
Centropyge colini
Centropyge aurantia
Centropyge multifasciatus
Centropyge conspicillatus
Holacanthus tricolor
Pygoplites diacanthus
Pygoplites diacanthus (Regal)
Grammistes sexlineatus
Pogonoperca punctata
Platax pinnatus
Exallias brevis
Anoplocapros lenticularis
Aracana aurita
Chilomycterus schoepfii
Lactoria cornuta
Ostracion cubicus
Ostracion meleagris
Ostracion whitleyi
Tetrosomus gibbosus
Chaetodon rainfordi
Amphiprion bicinctus
Amphiprion nigripes
Amphiprion tricinctus
Dactylopus dactylopus
Synchiropus ocellatus
Synchiropus picturatus
Synchiropus splendidus
Synchiropus stellatus
Rhinomuraena quaesita
Oxymonacanthus longirostris
Plectorhinchus chaetodonoides
Plectorhinchus lineatus
Plectorhinchus orientalis
Plectorhinchus picus
Aeoliscus strigatus
Corythoichthys haematopterus
Doryrhamphus dactyliophorus
Doryrhamphus excisus
Doryrhamphus multiannulatus
Lutjanus sebae
Macolor niger
Symphorichthys spilurus
Acanthurus achilles
Acanthurus lineatus
Hoplolatilus chlupatyi
Hoplolatilus marcosi
Anampses chrysocephalus
Anampses meleagrides
Anampses twistii
Cetoscarus bicolor
Hemigymnus melapterus
Labroides dimidiatus
Labroides phthirophagus
Macropharyngodon bipartitus
Macropharyngodon choati
Macropharyngodon geoffroy
Macropharyngodon meleagris
Macropharyngodon negrosensi
Scarus taeniopterus