Additional Freshwater Fishes of Simeulue Island, with Special Reference to the Presence of Sharp-Nosed River Mullet Cestraeus oxyrhyncus (Actinopterygii: Mugilidae)
Bibliographic record
Abstract
This study reports new records of freshwater fish species from Simeulue Island, Aceh Province, Indonesia. A biodiversity survey conducted in July 2021 revealed five additional fish species not previously documented on the island, including Acentrogobius sp., Giuris margaritaceus, Cestraeus oxyrhyncus, Poecilia reticulata and Clarias sp. The survey also confirmed the presence of introduced species, such as Nile Tilapia Oreochromis niloticus and Guppy Poecilia reticulata, highlighting the need for monitoring and managing non-native species in the region. The discovery of C. oxyrhyncus, currently classified as Data Deficient, accentuates the importance of further research to determine its threats, ecology, population size, and trends. This study contributes to the understanding of freshwater fish diversity on Simeulue Island and emphasises the importance of conservation efforts to protect the biodiversity of small islands in Indonesia. Keywords: Aceh, freshwater fish, Indonesia, Simeulue Island, Sumatra.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".