The tributaries of the Rios Altar are very important passageways for chubs, and it allows them to flow freely into Sycamore Creek in Beer Canyon, Arizona.

Sonora chubs concentrate themselves in the deepest and largest pools because they are more permanent, allowing a stable environment for their juveniles.

[citation needed] Spawning usually occurs in the early spring months of the year, based upon studies conducted by Minckley in 1973.

Larvae and juveniles have been found in Sycamore Creek and the Rio Altar in November, indicating that Sonora chubs do not restrict their spawning to the spring months.

The more desirable breeding males have evolved bright red and orange patterns on their fins to ensure their mating success.

Sycamore Creek has been highly modified by human activities such as mining, grazing, and recreation, as well as the introduction of foreign taxa.

In 1995, G. ditaenia was identified in the California Gulch, a small intermittent or ephemeral tributary of the Sycamore Canyon that joins it in Mexico.

[11] The Arizona Game and Fish Department reports that it has had difficulty in regularly surveying populations due to security issues.

[13] According to a later press release from the petitioning Center for Biological Diversity, a border wall section was built over the California Gulch bed between 2023 and 2024 that may prevent upstream migration of Sonora chub during favorable hydrological periods.