The Brachymystax tsinlingensis， a nationally protected aquatic wild animal in China, is an endangered fish species endemic to Qinling Mountains region. It is highly susceptible to environmental factors in field habitats during early developmental stages. To investigate the effects of chemical cues from different species within the community on the embryonic development of B. tsinlingensis， artificially fertilized eggs were used as experimental subjects. Four experimental treatments were established: potential predatory risk cues (PC), chemical alarm cues from conspecific embryos (CAC), a combination of potential predatory risk cues and chemical alarm cues (PC & CAC) and non-common plant cues (N-PC), with stream water as the control group. The geometric morphological characteristics of newly hatched larvae under these experimental treatments were then examined. The results revealed that the CAC treatment resulted in severe embryonic malformations with no normal individuals hatching. Compared to the control group, the PC, PC & CAC, and N-PC treatments all significantly reduced the body length of newly hatched larvae ( p <0.05). Additionally, the PC & CAC treatment led to reductions in relative head length, relative head height, and relative eye diameter ( p <0.05). However, the environmental chemical cues had no significant effect on relative yolk sac volume or yolk sac aspect ratio, and no statistically correlation was observed between body length and yolk sac volume across any treatment group. These results indicate that chemical cues in field habitat can significantly influence the early developmental morphology of B. tsinlingensis . Specifically, CAC, representing high-risk information, exerted strong teratogenic effects, while PC and N-PC induced morphological responses in embryos characterized by reduced body size. The findings offer insights and guidance for the artificial breeding and habitat conservation of B. tsinlingensis .