diff --git a/src/lib/api/treeherder.test.ts b/src/lib/api/treeherder.test.ts
index dfbe37c..4a26006 100644
--- a/src/lib/api/treeherder.test.ts
+++ b/src/lib/api/treeherder.test.ts
@@ -57,10 +57,7 @@ describe('selectCanonicalSignatures', () => {
 		expect(selectCanonicalSignatures([older, newer])).toEqual([newer]);
 	});
 
-	// On Android the base job is the one *without* 'fission', which the
-	// fewest-options rule yields for free. That property is the reason the rule
-	// is expressed this way rather than as a blocklist, so it is worth pinning.
-	it('yields the non-fission Android job without naming fission', () => {
+	it('prefers the Fission Android job over the non-Fission one', () => {
 		const nonFission = signature({
 			id: 1,
 			application: 'fenix',
@@ -74,7 +71,15 @@ describe('selectCanonicalSignatures', () => {
 			extra_options: ['fission']
 		});
 
-		expect(selectCanonicalSignatures([fission, nonFission])).toEqual([nonFission]);
+		expect(selectCanonicalSignatures([fission, nonFission])).toEqual([fission]);
+		expect(selectCanonicalSignatures([nonFission, fission])).toEqual([fission]);
+	});
+
+	it('prefers the fewest extra_options among Fission jobs', () => {
+		const base = signature({ id: 1, extra_options: ['fission', 'webrender'] });
+		const profiled = signature({ id: 2, extra_options: ['fission', 'simpleperf', 'webrender'] });
+
+		expect(selectCanonicalSignatures([profiled, base])).toEqual([base]);
 	});
 
 	it('returns nothing for no input', () => {
diff --git a/src/lib/api/treeherder.ts b/src/lib/api/treeherder.ts
index 45f10b0..e5729c1 100644
--- a/src/lib/api/treeherder.ts
+++ b/src/lib/api/treeherder.ts
@@ -65,11 +65,22 @@ export interface Measurement {
 	extraOptions: string[];
 }
 
+/**
+ * One signature per application/platform/suite/test: the Fission run if there
+ * is one, then the fewest extra_options (so not a profiled or other variant).
+ * Desktop always runs with Fission; Android also has a non-Fission job, which
+ * is not the one to chart.
+ */
 export function selectCanonicalSignatures(signatures: PerfSignature[]): PerfSignature[] {
 	const canonicalKey = (sig: PerfSignature) =>
 		[sig.application, sig.machine_platform, sig.suite, sig.test].join('|');
 
+	const hasFission = (sig: PerfSignature) => (sig.extra_options ?? []).includes('fission');
+
 	const isMoreCanonical = (candidate: PerfSignature, current: PerfSignature) => {
+		if (hasFission(candidate) !== hasFission(current)) {
+			return hasFission(candidate);
+		}
 		const candidateOptions = (candidate.extra_options ?? []).length;
 		const currentOptions = (current.extra_options ?? []).length;
 		if (candidateOptions !== currentOptions) {
diff --git a/src/lib/browsers.test.ts b/src/lib/browsers.test.ts
index dc2b00b..6781945 100644
--- a/src/lib/browsers.test.ts
+++ b/src/lib/browsers.test.ts
@@ -41,10 +41,10 @@ describe('classify', () => {
 		).toBeUndefined();
 	});
 
-	it('excludes fission variants from fenix', () => {
-		expect(
-			classify(measurement({ application: 'fenix', extraOptions: ['fission'] }))
-		).toBeUndefined();
+	it('keeps fenix with a fission option', () => {
+		expect(classify(measurement({ application: 'fenix', extraOptions: ['fission'] }))?.key).toBe(
+			'firefox'
+		);
 	});
 
 	it('keeps desktop Firefox with a fission option', () => {
diff --git a/src/lib/browsers.ts b/src/lib/browsers.ts
index fe81738..49cfadb 100644
--- a/src/lib/browsers.ts
+++ b/src/lib/browsers.ts
@@ -14,9 +14,7 @@ const isFirefoxFamily = (m: Measurement) =>
 	m.application === 'firefox' || m.application === 'fenix';
 
 /** Instrumented or otherwise non-comparable variants of the base Firefox job. */
-const isVariant = (m: Measurement) =>
-	m.extraOptions.includes('nova') ||
-	(m.application === 'fenix' && m.extraOptions.includes('fission'));
+const isVariant = (m: Measurement) => m.extraOptions.includes('nova');
 
 /**
  * Safari and Safari TP. On Mac they run on a different machine pool from
diff --git a/src/lib/speedometer/config.ts b/src/lib/speedometer/config.ts
index 658133f..b7500ee 100644
--- a/src/lib/speedometer/config.ts
+++ b/src/lib/speedometer/config.ts
@@ -84,21 +84,30 @@ export const PLATFORMS: readonly PlatformConfig[] = [
 	{
 		key: 'android-s24',
 		label: 'Android (S24)',
-		platforms: ['android-hw-s24-14-0-aarch64-shippable'],
+		platforms: [
+			'android-hw-s24-14-0-aarch64-nightlyasrelease',
+			'android-hw-s24-14-0-aarch64-shippable'
+		],
 		supportsSafari: false,
 		group: 'mobile'
 	},
 	{
 		key: 'android-a55',
 		label: 'Android (A55)',
-		platforms: ['android-hw-a55-14-0-aarch64-shippable'],
+		platforms: [
+			'android-hw-a55-14-0-aarch64-nightlyasrelease',
+			'android-hw-a55-14-0-aarch64-shippable'
+		],
 		supportsSafari: false,
 		group: 'mobile'
 	},
 	{
 		key: 'android-p6',
 		label: 'Android (P6)',
-		platforms: ['android-hw-p6-13-0-aarch64-shippable'],
+		platforms: [
+			'android-hw-p6-13-0-aarch64-nightlyasrelease',
+			'android-hw-p6-13-0-aarch64-shippable'
+		],
 		supportsSafari: false,
 		group: 'mobile'
 	}