Glossary
base
The bottom or lowest part of something.
Biology. The point of attachment of a part or organ, e.g., a fin.
Chemistry. A substance that can accept protons or donate pairs of electrons. The chemical opposite of an acid. Bases have a pH greater than 7.0 and a solution containing one or more bases is often referred to as an alkali.
Used in 1,192 species profiles
- Abbottina rivularis
- Aborichthys elongatus
- Aborichthys sp. 'AR01'
- Aborichthys sp. 'AR02'
- Abramites hypselonotus
- Acanthicus adonis
- Acanthicus hystrix
- Acanthocobitis pavonacea
- Acanthodoras cataphractus
- Acanthodoras spinosissimus
- Acanthopsoides molobrion
- Acanthopsoides robertsi
- Acanthopsoides sp. 'A01'
- Acanthopsoides sp. 'A02'
- Acantopsis dialuzona
- Acarichthys heckelii
- Acestrorhynchus altus
- Acestrorhynchus falcatus
- Acestrorhynchus falcirostris
- Acestrorhynchus isalineae
- Acestrorhynchus microlepis
- Acestrorhynchus pantaneiro
- Acheilognathus macropterus
- Acnodon normani
- Acoura savona
- Acrochordonichthys gyrinus
- Acrochordonichthys rugosus
- Acrochordonichthys septentrionalis
- Acrossocheilus paradoxus
- Aequidens tetramerus
- Agamyxis pectinifrons
- Ageneiogarra imberba
- Ageneiosus inermis
- Ageneiosus marmoratus
- Ageneiosus ucayalensis
- Akysis hendricksoni
- Akysis longifilis
- Akysis maculipinnis
- Akysis portellus
- Akysis prashadi
- Akysis pulvinatus
- Akysis varius
- Akysis vespa
- Akysis vespertinus
- Alestopetersius brichardi
- Alestopetersius caudalis
- Alestopetersius nigropterus
- Alestopetersius smykalai
- Alfaro cultratus
- Allenbatrachus grunniens
- Altolamprologus compressiceps
- Amatitlania myrnae
- Amatitlania nigrofasciata
- Ambastaia nigrolineata
- Ambastaia sidthimunki
- Amblydoras nauticus
- Amblypharyngodon chulabhornae
- Ameca splendens
- Amia calva
- Amphilophus citrinellus
- Amphilophus labiatus
- Anabas testudineus
- Anableps anableps
- Anatolichthys anatoliae
- Anatolichthys danfordii
- Anatolichthys saldae
- Anatolichthys sureyanus
- Anatolichthys transgrediens
- Anatolichthys villwocki
- Ancistomus sp. L147
- Ancistrus claro
- Ancistrus dolichopterus
- Ancistrus ranunculus
- Ancistrus sp.
- Ancistrus sp. '3'
- Andinoacara pulcher
- Andinoacara rivulatus
- Andinoacara sp. 'Orinoco'
- Annamia cf. thuathienensis
- Annamia normani
- Anomalochromis thomasi
- Anostomus anostomus
- Anostomus ternetzi
- Aphaniops dispar
- Aphaniops sirhani
- Aphanius fasciatus
- Aphyocharax anisitsi
- Aphyocharax nattereri
- Aphyocharax rathbuni
- Aphyosemion australe
- Aphyosemion gabunense
- Aphyosemion ogoense
- Aphyosemion sp. 'Oyo' RPC 91/8
- Aphyosemion splendopleure
- Aphyosemion striatum
- Apistogramma agassizii
- Apistogramma alacrina
- Apistogramma baenschi
- Apistogramma barlowi
- Apistogramma bitaeniata
- Apistogramma borellii
- Apistogramma cacatuoides
- Apistogramma cinilabra
- Apistogramma elizabethae
- Apistogramma eremnopyge
- Apistogramma eunotus
- Apistogramma gibbiceps
- Apistogramma hoignei
- Apistogramma hongsloi
- Apistogramma macmasteri
- Apistogramma mendezi
- Apistogramma nijsseni
- Apistogramma norberti
- Apistogramma panduro
- Apistogramma paulmuelleri
- Apistogramma sp. 'breitbinden'
- Apistogramma sp. 'Kelleri'
- Apistogramma steindachneri
- Apistogramma trifasciata
- Apistogramma viejita
- Aplocheilus blockii
- Aplocheilus parvus
- Apricaphanius baeticus
- Apricaphanius iberus
- Apricaphanius saourensis
- Ariopsis seemanni
- Aristochromis christyi
- Arnoldichthys spilopterus
- Aspidoras pauciradiatus
- Aspidoras raimundi
- Aspidoras taurus
- Asterophysus batrachus
- Astronotus ocellatus
- Astyanax bimaculatus
- Astyanax kennedyi
- Astyanax leopoldi
- Astyanax mexicanus
- Auchenipterichthys coracoideus
- Aulonocara baenschi
- Aulonocara ethelwynnae
- Aulonocara hansbaenschi
- Aulonocara jacobfreibergi
- Aulonocara maylandi
- Aulonocara sp. 'stuartgranti maleri'
- Aulonocara sp. 'walteri'
- Aulonocara stuartgranti
- Axelrodia riesei
- Axelrodia stigmatias
- Badis assamensis
- Badis badis
- Badis blosyrus
- Badis corycaeus
- Badis ferrarisi
- Badis juergenschmidti
- Badis khwae
- Badis kyar
- Badis pyema
- Badis ruber
- Badis siamensis
- Badis sp. 'Buxar'
- Badis tuivaiei
- Bagarius suchus
- Bagrichthys macracanthus
- Bagrichthys majusculus
- Bagrichthys obscurus
- Balantiocheilos melanopterus
- Balitoropsis zollingeri
- Balroglanis macracanthus
- Barbodes aurotaeniatus
- Barbodes banksi
- Barbodes binotatus
- Barbodes dunckeri
- Barbodes everetti
- Barbodes kuchingensis
- Barbodes semifasciolatus
- Barboides gracilis
- Barbonymus altus
- Barbonymus gonionotus
- Barbonymus schwanefeldii
- Barbucca diabolica
- Bario oligolepis
- Bario sanctaefilomenae
- Baryancistrus beggini
- Baryancistrus chrysolomus
- Baryancistrus demantoides
- Baryancistrus sp. L142
- Baryancistrus xanthellus
- Batasio feruminatus
- Batasio fluviatilis
- Batasio tigrinus
- Batasio travancoria
- Beaufortia cyclica
- Beaufortia kweichowensis
- Beaufortia szechuanensis
- Bedotia madagascariensis
- Belontia hasselti
- Belontia signata
- Betadevario ramachandrani
- Betta akarensis
- Betta albimarginata