Name: CAS Ichthyology (ICH)
License: To the extent possible under law, the publisher has waived all rights to these data and has dedicated them to the Public Domain (CC0 1.0)

The electronic catalog of the ichthyology collection at the California Academy of Sciences, San Francisco.

Citation

Fong J (2026). CAS Ichthyology (ICH). Version 150.538. California Academy of Sciences. Occurrence dataset. http://ipt.calacademy.org:8080/resource?r=ich&v=150.538

Published

August 31, 2026 at 22:47

First registration

October 14, 2022 at 13:35

License

To the extent possible under law, the publisher has waived all rights to these data and has dedicated them to the Public Domain (CC0 1.0)

URL

http://ipt.calacademy.org:8080/resource?r=ich

Archive

http://ipt.calacademy.org:8080/archive.do?r=ich

Contacts

Jon Fong
California Academy of Sciences

Luiz Rocha
California Academy of Sciences

220,787

total submitted occurrences

146,842

accepted occurrences

10,806

taxa

9,239

species

Taxa

Missing and invalid fields

Field	Missing	Invalid
coordinateUncertaintyInMeters	126,133	67	57.2%
decimalLatitude	35,191		15.9%
decimalLongitude	35,201		15.9%
eventDate	34,664		15.7%
maximumDepthInMeters	154,800		70.1%
minimumDepthInMeters	128,056	2	58.0%
occurrenceStatus	220,787		100.0%
scientificName	2,816		1.3%
scientificNameID	220,787		100.0%

Quality flags

The OBIS data quality flags are documented at https://github.com/iobis/obis-qc.

Flag	Records
NO_DEPTH	127,941	57.9%
ON_LAND	67,284	30.5%
NO_COORD	35,210	15.9%
NOT_MARINE	33,267	15.1%
NO_MATCH	18,221	8.3%
DEPTH_EXCEEDS_BATH	8,733	4.0%
NO_ACCEPTED_NAME	97	0.0%
MARINE_UNSURE	95	0.0%
DATE_BEFORE_MIN	2	0.0%
DEPTH_OUT_OF_RANGE	2	0.0%

CAS Ichthyology (ICH)

Taxa

Missing and invalid fields

Quality flags

Measurement types

DNA derived data